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Irenaeus ( or ; ; ) was a
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bishop noted for his role in guiding and expanding
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communities in the southern regions of present-day
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and, more widely, for the development of
Christian theology Christian theology is the theology – the systematic study of the divine and religion – of Christianity, Christian belief and practice. It concentrates primarily upon the texts of the Old Testament and of the New Testament, as well as on Ch ...
by opposing
Gnostic Gnosticism (from Ancient Greek: , romanized: ''gnōstikós'', Koine Greek: �nostiˈkos 'having knowledge') is a collection of religious ideas and systems that coalesced in the late 1st century AD among early Christian sects. These diverse g ...
interpretations of Christian Scripture and defining proto-orthodoxy. Originating from
Smyrna Smyrna ( ; , or ) was an Ancient Greece, Ancient Greek city located at a strategic point on the Aegean Sea, Aegean coast of Anatolia, Turkey. Due to its advantageous port conditions, its ease of defence, and its good inland connections, Smyrna ...
, he had seen and heard the preaching of
Polycarp Polycarp (; , ''Polýkarpos''; ; AD 69 155) was a Christian Metropolis of Smyrna, bishop of Smyrna. According to the ''Martyrdom of Polycarp'', he died a martyr, bound and burned at the stake, then stabbed when the fire failed to consume his bo ...
, who in turn was said to have heard
John the Evangelist John the Evangelist ( – ) is the name traditionally given to the author of the Gospel of John. Christians have traditionally identified him with John the Apostle, John of Patmos, and John the Presbyter, although there is no consensus on how ...
. Chosen as Bishop of Lugdunum, now Lyon, Irenaeus wrote his best-known work ''
Against Heresies ''Against Heresies'' (Koine Greek: Ἔλεγχος καὶ ἀνατροπὴ τῆς ψευδωνύμου γνώσεως, ''Elenchos kai anatropē tēs pseudōnymou gnōseōs'', "Refutation and Overthrowal of Knowledge falsely so-called"), som ...
'' around 180 as a refutation of
gnosticism Gnosticism (from Ancient Greek language, Ancient Greek: , Romanization of Ancient Greek, romanized: ''gnōstikós'', Koine Greek: Help:IPA/Greek, �nostiˈkos 'having knowledge') is a collection of religious ideas and systems that coalesced ...
, in particular that of
Valentinus Valentinus is a Roman masculine given name derived from the Latin word "valens" meaning "healthy, strong". It may refer to: People Churchmen *Pope Valentine (died 827) *Saint Valentine, 3rd century Christian saint *Valentinus (Gnostic) (died c. 1 ...
. To counter the doctrines of the gnostic sects claiming secret wisdom, he offered three pillars of
orthodoxy Orthodoxy () is adherence to a purported "correct" or otherwise mainstream- or classically-accepted creed, especially in religion. Orthodoxy within Christianity refers to acceptance of the doctrines defined by various creeds and ecumenical co ...
: the
scripture Religious texts, including scripture, are texts which various religions consider to be of central importance to their religious tradition. They often feature a compilation or discussion of beliefs, ritual practices, moral commandments and ...
s, the
tradition A tradition is a system of beliefs or behaviors (folk custom) passed down within a group of people or society with symbolic meaning or special significance with origins in the past. A component of cultural expressions and folklore, common e ...
said to be handed down from the
apostles An apostle (), in its literal sense, is an emissary. The word is derived from Ancient Greek ἀπόστολος (''apóstolos''), literally "one who is sent off", itself derived from the verb ἀποστέλλειν (''apostéllein''), "to se ...
, and the teaching of the apostles' successors. He is the earliest surviving witness to regard all four of the now-
canonical The adjective canonical is applied in many contexts to mean 'according to the canon' the standard, rule or primary source that is accepted as authoritative for the body of knowledge or literature in that context. In mathematics, ''canonical exampl ...
gospel Gospel originally meant the Christianity, Christian message ("the gospel"), but in the second century Anno domino, AD the term (, from which the English word originated as a calque) came to be used also for the books in which the message w ...
s as essential. Irenaeus is venerated as a
saint In Christianity, Christian belief, a saint is a person who is recognized as having an exceptional degree of sanctification in Christianity, holiness, imitation of God, likeness, or closeness to God in Christianity, God. However, the use of the ...
in the
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,
Anglican Church Anglicanism, also known as Episcopalianism in some countries, is a Western Christianity, Western Christian tradition which developed from the practices, liturgy, and identity of the Church of England following the English Reformation, in the ...
, Lutheran Churches, the
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, the
Oriental Orthodox Churches The Oriental Orthodox Churches are Eastern Christian churches adhering to Miaphysite Christology, with approximately 50 million members worldwide. The Oriental Orthodox Churches adhere to the Nicene Christian tradition. Oriental Orthodoxy is ...
, and the
Assyrian Church of the East The Assyrian Church of the East (ACOE), sometimes called the Church of the East and officially known as the Holy Apostolic Catholic Assyrian Church of the East, is an Eastern Christianity, Eastern Syriac Christianity, Syriac Christian denomin ...
. He was declared a
Doctor of the Church Doctor of the Church (Latin: ''doctor'' "teacher"), also referred to as Doctor of the Universal Church (Latin: ''Doctor Ecclesiae Universalis''), is a title given by the Catholic Church to saints recognized as having made a significant contribut ...
in the Catholic Church by
Pope Francis Pope Francis (born Jorge Mario Bergoglio; 17 December 1936 – 21 April 2025) was head of the Catholic Church and sovereign of the Vatican City State from 13 March 2013 until Death and funeral of Pope Francis, his death in 2025. He was the fi ...
in 2022.


Biography

Irenaeus was a Greek from
Polycarp Polycarp (; , ''Polýkarpos''; ; AD 69 155) was a Christian Metropolis of Smyrna, bishop of Smyrna. According to the ''Martyrdom of Polycarp'', he died a martyr, bound and burned at the stake, then stabbed when the fire failed to consume his bo ...
's hometown of
Smyrna Smyrna ( ; , or ) was an Ancient Greece, Ancient Greek city located at a strategic point on the Aegean Sea, Aegean coast of Anatolia, Turkey. Due to its advantageous port conditions, its ease of defence, and its good inland connections, Smyrna ...
in
Anatolia Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
, now
İzmir İzmir is the List of largest cities and towns in Turkey, third most populous city in Turkey, after Istanbul and Ankara. It is on the Aegean Sea, Aegean coast of Anatolia, and is the capital of İzmir Province. In 2024, the city of İzmir had ...
, Turkey, born during the first half of the 2nd century. The exact date is thought to be between the years 120 and 130. Unlike many of his contemporaries, he was brought up in a Christian family rather than converting as an adult. During a local persecution of Christians around Lyon duiring the reign of
Marcus Aurelius Marcus Aurelius Antoninus ( ; ; 26 April 121 – 17 March 180) was Roman emperor from 161 to 180 and a Stoicism, Stoic philosopher. He was a member of the Nerva–Antonine dynasty, the last of the rulers later known as the Five Good Emperors ...
, the Roman emperor from 161 to 180, Irenaeus was a priest of the Church of Lyon. The clergy of that city, many of whom were suffering imprisonment for the faith, sent him to Rome in 177 with a letter to Pope Eleutherius concerning the heresy of
Montanism Montanism (), known by its adherents as the New Revelation, was an History of Christianity#Early Christianity (c. 31/33–324), early Christian movement of the Christianity in the 2nd century, mid-to-late 2nd century, later referred to by the n ...
, and that occasion bore emphatic testimony to his merits. While Irenaeus was in Rome, the Lyon persecution took place. Returning to Gaul, Irenaeus succeeded the
martyr A martyr (, ''mártys'', 'witness' Word stem, stem , ''martyr-'') is someone who suffers persecution and death for advocating, renouncing, or refusing to renounce or advocate, a religious belief or other cause as demanded by an external party. In ...
Saint Pothinus Saint Pothinus (; 87 - c. 177) was the first bishop of Lyon and the first bishop of Gaul. He is first mentioned in a letter attributed to Irenaeus of Lyon. The letter was sent from the Christian communities of Lyon and Vienne to the Roman prov ...
and became the second
bishop of Lyon The Archdiocese of Lyon (; ), formerly the Archdiocese of Lyon–Vienne–Embrun, is a Latin Church metropolis (religious jurisdiction), metropolitan archdiocese of the Catholic Church in France. The archbishops of Lyon are also called Primate o ...
. During the religious peace which followed the Lyon persecution, the new bishop divided his activities between the duties of a pastor and of a missionary (as to which we have but brief data, late and not very certain). Almost all his writings were directed against Gnosticism. The most famous of these writings is ''On the Detection and Overthrow of the So-Called Gnosis'', usually known by the abbreviated title ''Against Heresies'' ( ''Adversus haereses''). Irenaeus alludes to coming across Gnostic writings, and holding conversations with Gnostics, and this may have taken place in Anatolia or in Rome. However, it also appears that Gnosticism was present near Lyon: he writes that there were followers of ' Marcus the Magician' living and teaching in the Rhone valley. Little is known about the career of Irenaeus after he became bishop. The last action reported of him (by Eusebius, 150 years later) is that in 190 or 191, he exerted influence on
Pope Victor I Pope Victor I (died 199) was a Roman African prelate of the Catholic Church who served as the Bishop of Rome in the late second century. The dates of his tenure are uncertain, but one source states he became pope in 189 and gives the year of h ...
not to excommunicate the Christian communities of Anatolia which persevered in the practice of the Quartodeciman celebration of
Easter Easter, also called Pascha ( Aramaic: פַּסְחָא , ''paskha''; Greek: πάσχα, ''páskha'') or Resurrection Sunday, is a Christian festival and cultural holiday commemorating the resurrection of Jesus from the dead, described in t ...
. Nothing is known of the date of his death, which must have occurred at the end of the second or the beginning of the third century. He is regarded as a martyr by the Catholic Church and by some within the Orthodox Church. He was buried under the Church of Saint John in Lyon, which was later renamed St Irenaeus in his honour. The church was devastated in 1562 by the
Huguenots The Huguenots ( , ; ) are a Religious denomination, religious group of French people, French Protestants who held to the Reformed (Calvinist) tradition of Protestantism. The term, which may be derived from the name of a Swiss political leader, ...
. Several relics supposedly of Irenaeus are held in various churches in Lyon. Two crania from different churches were dated by
carbon-14 Carbon-14, C-14, C or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. Its presence in organic matter is the basis of the radiocarbon dating method pioneered by Willard Libby and coll ...
to the Middle Ages, but a piece of heelbone kept in the
Lyon Cathedral Lyon Cathedral () is a Roman Catholic Church architecture, church located on Place Saint-Jean in central Lyon, France. The cathedral is dedicated to Saint John the Baptist, and is the seat of the Archbishop of Lyon. Begun in 1180 on the ruins of ...
is from the right time period.


Veneration

The Latin
Catholic Church The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...
celebrates Irenaeus' memorial on 28 June.
Pope Francis Pope Francis (born Jorge Mario Bergoglio; 17 December 1936 – 21 April 2025) was head of the Catholic Church and sovereign of the Vatican City State from 13 March 2013 until Death and funeral of Pope Francis, his death in 2025. He was the fi ...
declared Irenaeus the 37th
Doctor of the Church Doctor of the Church (Latin: ''doctor'' "teacher"), also referred to as Doctor of the Universal Church (Latin: ''Doctor Ecclesiae Universalis''), is a title given by the Catholic Church to saints recognized as having made a significant contribut ...
on 21 January 2022. Francis also conferred upon Irenaeus the supplementary title ''Doctor unitatis'' ("Doctor of Unity"). The
Eastern Orthodox Eastern Orthodoxy, otherwise known as Eastern Orthodox Christianity or Byzantine Christianity, is one of the three main Branches of Christianity, branches of Chalcedonian Christianity, alongside Catholic Church, Catholicism and Protestantism ...
Church celebrates Irenaeus, the feast being on 23 August. Lutheran Churches honor Irenaeus on their
calendar of saints The calendar of saints is the traditional Christian method of organizing a liturgical year by associating each day with one or more saints and referring to the day as the feast day or feast of said saint. The word "feast" in this context does n ...
on 28 June. Irenaeus is honored in the
Church of England The Church of England (C of E) is the State religion#State churches, established List of Christian denominations, Christian church in England and the Crown Dependencies. It is the mother church of the Anglicanism, Anglican Christian tradition, ...
and in the Episcopal Church on 28 June.


Writings

Irenaeus wrote a number of books, but the most important that survives is the ''
Against Heresies ''Against Heresies'' (Koine Greek: Ἔλεγχος καὶ ἀνατροπὴ τῆς ψευδωνύμου γνώσεως, ''Elenchos kai anatropē tēs pseudōnymou gnōseōs'', "Refutation and Overthrowal of Knowledge falsely so-called"), som ...
'' (or, in its
Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
title, ''Adversus haereses''). In Book I, Irenaeus talks about the Valentinian Gnostics and their predecessors, who he says go as far back as the magician
Simon Magus Simon Magus (Greek Σίμων ὁ μάγος, Latin: Simon Magus), also known as Simon the Sorcerer or Simon the Magician, was a religious figure whose confrontation with Peter is recorded in the Acts of the Apostles. The act of simony, or payi ...
. In Book II he attempts to provide proof that
Valentinianism Valentinianism was one of the major Gnostic Christian movements. Founded by Valentinus ( CE – CE) in the 2nd century, its influence spread widely, not just within the Roman Empire but also from northwest Africa to Egypt through to Asia Minor ...
contains no merit in terms of its doctrines. In Book III, Irenaeus attempts to show that these doctrines are false, by providing counter-evidence gleaned from the
Gospel Gospel originally meant the Christianity, Christian message ("the gospel"), but in the second century Anno domino, AD the term (, from which the English word originated as a calque) came to be used also for the books in which the message w ...
s. Book IV consists of Jesus's sayings, and here Irenaeus also stresses the unity of the Old Testament and the Gospel. In the final volume, Book V, Irenaeus focuses on more sayings of Jesus plus the letters of
Paul the Apostle Paul, also named Saul of Tarsus, commonly known as Paul the Apostle and Saint Paul, was a Apostles in the New Testament, Christian apostle ( AD) who spread the Ministry of Jesus, teachings of Jesus in the Christianity in the 1st century, first ...
. Irenaeus wrote: "One should not seek among others the truth that can be easily gotten from the Church. For in her, as in a rich treasury, the apostles have placed all that pertains to truth, so that everyone can drink this beverage of life. She is the door of life." But he also said, "Christ came not only for those who believed from the time of Tiberius Caesar, nor did the Father provide only for those who are now, but for absolutely all men from the beginning, who, according to their ability, feared and loved God and lived justly. . . and desired to see Christ and to hear His voice." The purpose of "Against Heresies" was to refute the teachings of various Gnostic groups; apparently, several Greek merchants had begun an oratorial campaign in Irenaeus's bishopric, teaching that the material world was the accidental creation of an evil god, from which we are to escape by the pursuit of ''gnosis''. Irenaeus argued that the true gnosis is in fact knowledge of Christ, which redeems rather than escapes from bodily existence. Until the discovery of the Library of Nag Hammadi in 1945, ''Against Heresies'' was the best-surviving description of Gnosticism. Some religious scholars have argued the findings at Nag Hammadi have shown Irenaeus's description of Gnosticism to be inaccurate and polemic in nature. However, the general consensus among modern scholars is that Irenaeus was fairly accurate in his transmission of gnostic beliefs, and that the Nag Hammadi texts have raised no substantial challenges to the overall accuracy of Irenaeus's information. Religious historian Elaine Pagels criticizes Irenaeus for describing Gnostic groups as sexual libertines, for example, when some of their own writings advocated chastity more strongly than did orthodox texts. However, the Nag Hammadi texts do not present a single, coherent picture of any unified gnostic system of belief, but rather divergent beliefs of multiple Gnostic sects. Some of these sects were indeed libertine because they considered bodily existence meaningless; others praised chastity, and strongly prohibited any sexual activity, even within marriage. Irenaeus also wrote
The Demonstration of the Apostolic Preaching
' (also known as ''Proof of the Apostolic Preaching''), an
Armenian Armenian may refer to: * Something of, from, or related to Armenia, a country in the South Caucasus region of Eurasia * Armenians, the national people of Armenia, or people of Armenian descent ** Armenian diaspora, Armenian communities around the ...
copy of which was discovered in 1904. This work seems to have been an instruction for recent Christian converts. Eusebius attests to other works by Irenaeus, today lost, including ''On the Ogdoad,'' an untitled letter to Blastus regarding schism, ''On the Subject of Knowledge'', ''On the Monarchy'' or ''How God is not the Cause of Evil'', ''On Easter''. Irenaeus exercised wide influence on the generation which followed. Both Hippolytus and
Tertullian Tertullian (; ; 155 – 220 AD) was a prolific Early Christianity, early Christian author from Roman Carthage, Carthage in the Africa (Roman province), Roman province of Africa. He was the first Christian author to produce an extensive co ...
freely drew on his writings. However, none of his works aside from ''Against Heresies'' and ''The Demonstration of the Apostolic Preaching'' survive today, perhaps because his literal hope of an earthly
millennium A millennium () is a period of one thousand years, one hundred decades, or ten centuries, sometimes called a kiloannum (ka), or kiloyear (ky). Normally, the word is used specifically for periods of a thousand years that begin at the starting ...
may have made him uncongenial reading in the
Greek East Greek East and Latin West are terms used to distinguish between the two parts of the Greco-Roman world and of medieval Christendom, specifically the eastern regions where Greek was the ''lingua franca'' (Greece, Anatolia, the southern Balkans, t ...
. Even though no complete version of ''Against Heresies'' in its original Greek exists, we possess the full ancient Latin version, probably of the third century, as well as thirty-three fragments of a Syrian version and a complete Armenian version of books 4 and 5.
Evelyn Underhill Evelyn Underhill (6 December 1875 – 15 June 1941) was an English Anglo-Catholic writer and pacifist known for her numerous works on religion and spirituality, spiritual practice, in particular Christian mysticism. Her best-known work is ''Myst ...
in her book Mysticism credited Irenaeus as being one of those to whom we owe "the preservation of that mighty system of scaffolding which enabled the Catholic mystics to build up the towers and bulwarks of the City of God." Irenaeus's works were first translated into English by
John Keble John Keble (25 April 1792 – 29 March 1866) was an English Anglican priest and poet who was one of the leaders of the Oxford Movement. Keble College, Oxford, is named after him. Early life Keble was born on 25 April 1792 in Fairford, Glouces ...
and published in 1872 as part of the Library of the Fathers series.


Scripture

Irenaeus pointed to the public
rule of faith The rule of faith (, ) is the name given to the ultimate authority in Christian belief or fundamental hermeneutic (interpretive) standard (e.g., for biblical interpretation.). It was used by Early Christian writers such as Tertullian. The phrase is ...
, authoritatively articulated by the preaching of bishops and inculcated in Church practice, especially worship, as an authentic apostolic tradition by which to read Scripture truly against heresies. He classified as Scripture not only the Old Testament but most of the books now known as the New Testament, while excluding many works, a large number by Gnostics, that flourished in the 2nd century and claimed scriptural authority. Oftentimes, Irenaeus, as a student of Polycarp, who he claimed was a student of John, believed that he was interpreting scriptures in the same hermeneutic as the Apostles. This connection to Jesus was important to Irenaeus because both he and the Gnostics based their arguments on Scripture. Irenaeus argued that since he could trace his authority to Jesus and the Gnostics could not, his interpretation of Scripture was correct. He also used "the Rule of Faith", a "proto-creed" with similarities to the
Apostles' Creed The Apostles' Creed (Latin: ''Symbolum Apostolorum'' or ''Symbolum Apostolicum''), sometimes titled the Apostolic Creed or the Symbol of the Apostles, is a Christian creed or "symbol of faith". "Its title is first found c.390 (Ep. 42.5 of Ambro ...
, as a hermeneutical key to argue that his interpretation of Scripture was correct. Before Irenaeus, Christians differed as to which gospel they preferred. The Christians of Anatolia preferred the Gospel of John. The Gospel of Matthew was the most popular overall. Irenaeus asserted that all four of the Gospels,
John John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second E ...
, Luke, Matthew, and
Mark Mark may refer to: In the Bible * Mark the Evangelist (5–68), traditionally ascribed author of the Gospel of Mark * Gospel of Mark, one of the four canonical gospels and one of the three synoptic gospels Currencies * Mark (currency), a currenc ...
(which is the order presented in his four pillar narrative in ''
Adversus haereses ''Adversus Haereses'' is the commonly used Latin title for a book by the Church Father Irenaeus, Bishop of Lyon in Gaul (now France). It is also often cited as ''Against Heresies'' or ''On the Detection and Overthrow of the So-Called Gnosis''. I ...
'' (''Against Heresies'') III 11,8), were canonical scripture. Thus Irenaeus provides the earliest witness to the assertion of the four canonical Gospels, possibly in reaction to
Marcion Marcion of Sinope (; ; ) was a theologian in early Christianity. Marcion preached that God had sent Jesus Christ, who was distinct from the "vengeful" God ( Demiurge) who had created the world. He considered himself a follower of Paul the Apost ...
's edited version of the Gospel of Luke, which Marcion asserted was the one and only true gospel. Based on the arguments Irenaeus made in support of only four authentic gospels, some interpreters deduce that the ''fourfold Gospel'' must have still been a novelty in Irenaeus's time. ''Against Heresies'' 3.11.7 acknowledges that many heterodox Christians use only one gospel while 3.11.9 acknowledges that some use more than four. The success of
Tatian Tatian of Adiabene, or Tatian the Syrian or Tatian the Assyrian, (; ; ; ; – ) was an Assyrian Christian writer and theologian of the 2nd century. Tatian's most influential work is the Diatessaron, a Biblical paraphrase, or "harmony", of the ...
's
Diatessaron The ''Diatessaron'' (; c. 160–175 AD) is the most prominent early gospel harmony. It was created in the Syriac language by Tatian, an Assyrian early Christian apologist and ascetic. Tatian sought to combine all the textual material he fou ...
in about the same time period is "... a powerful indication that the fourfold Gospel contemporaneously sponsored by Irenaeus was not broadly, let alone universally, recognized." (The apologist and ascetic Tatian had previously harmonized the four gospels into a single narrative, the ''Diatesseron'' –160) Irenaeus is also the earliest to say that the Gospel of John was written by
John the Apostle John the Apostle (; ; ), also known as Saint John the Beloved and, in Eastern Orthodox Christianity, Saint John the Theologian, was one of the Twelve Apostles of Jesus according to the New Testament. Generally listed as the youngest apostle, he ...
, and that the Gospel of Luke was written by Luke, the companion of Paul. Scholars contend that Irenaeus quotes from 21 of the 27 New Testament books. He may refer to Hebrews 2:30 and James 4:16 and maybe even 2 Peter 5:28, but does not cite Philemon. Irenaeus cited the New Testament approximately 1,000 times. About one third of his citations are made to Paul's letters. Irenaeus considered all 13 letters belonging to the Pauline corpus to have been written by Paul himself.


Apostolic authority

In his writing against the Gnostics, who claimed to possess a secret oral tradition from Jesus himself, Irenaeus claimed that the bishops in different cities are known as far back as the Apostles and that the oral tradition he lists from the Apostles is a safe guide to the interpretation of Scripture. In a passage that became a '' locus classicus'' of Catholic-Protestant polemics, he cited the Roman church as an example of the unbroken chain of authority, which text Catholic polemics would use to assert the primacy of Rome over Eastern churches by virtue of its preeminent authority. The succession of bishops and presbyters was important to establish a chain of custody for orthodoxy. Irenaeus's point when refuting the Gnostics was that all of the Apostolic churches had preserved the same traditions and teachings in many independent streams. It was the unanimous agreement between these many independent streams of transmission that proved the orthodox faith, current in those churches, to be true.


Theology and contrast with Gnosticism

The central point of Irenaeus's
theology Theology is the study of religious belief from a Religion, religious perspective, with a focus on the nature of divinity. It is taught as an Discipline (academia), academic discipline, typically in universities and seminaries. It occupies itse ...
is the unity and the goodness of
God In monotheistic belief systems, God is usually viewed as the supreme being, creator, and principal object of faith. In polytheistic belief systems, a god is "a spirit or being believed to have created, or for controlling some part of the un ...
, in opposition to the Gnostics' theory of God; a number of divine emanations (Aeons) along with a distinction between the
Monad Monad may refer to: Philosophy * Monad (philosophy), a term meaning "unit" **Monism, the concept of "one essence" in the metaphysical and theological theory ** Monad (Gnosticism), the most primal aspect of God in Gnosticism * ''Great Monad'', an ...
and the
Demiurge In the Platonic, Neopythagorean, Middle Platonic, and Neoplatonic schools of philosophy, the Demiurge () is an artisan-like figure responsible for fashioning and maintaining the physical universe. Various sects of Gnostics adopted the term '' ...
. Irenaeus uses the
Logos ''Logos'' (, ; ) is a term used in Western philosophy, psychology and rhetoric, as well as religion (notably Logos (Christianity), Christianity); among its connotations is that of a rationality, rational form of discourse that relies on inducti ...
theology, common in 2nd Century Christian theology. Irenaeus was a student of
Polycarp Polycarp (; , ''Polýkarpos''; ; AD 69 155) was a Christian Metropolis of Smyrna, bishop of Smyrna. According to the ''Martyrdom of Polycarp'', he died a martyr, bound and burned at the stake, then stabbed when the fire failed to consume his bo ...
, who was said to have been tutored by
John the Apostle John the Apostle (; ; ), also known as Saint John the Beloved and, in Eastern Orthodox Christianity, Saint John the Theologian, was one of the Twelve Apostles of Jesus according to the New Testament. Generally listed as the youngest apostle, he ...
. Irenaeus often spoke of the Son and the Spirit as the "hands of God," though he also spoke of the Son as the "Logos."


Unity of salvation history

Irenaeus's emphasis on the unity of God is reflected in his corresponding emphasis on the unity of
salvation Salvation (from Latin: ''salvatio'', from ''salva'', 'safe, saved') is the state of being saved or protected from harm or a dire situation. In religion and theology, ''salvation'' generally refers to the deliverance of the soul from sin and its c ...
history. Irenaeus repeatedly insists that God began the world and has been overseeing it ever since this creative act; everything that has happened is part of his plan for humanity. The essence of this plan is a process of maturation: Irenaeus believes that humanity was created immature, and God intended his creatures to take a long time to grow into or assume the divine likeness. Everything that has happened since has therefore been planned by God to help humanity overcome this initial mishap and achieve spiritual maturity. The world has been intentionally designed by God as a difficult place, where human beings are forced to make moral decisions, as only in this way can they mature as moral agents. Irenaeus likens death to the big fish that swallowed
Jonah Jonah the son of Amittai or Jonas ( , ) is a Jewish prophet from Gath-hepher in the Northern Kingdom of Israel around the 8th century BCE according to the Hebrew Bible. He is the central figure of the Book of Jonah, one of the minor proph ...
: it was only in the depths of the whale's belly that Jonah could turn to God and act according to the divine will. Similarly, death and suffering appear as
evil Evil, as a concept, is usually defined as profoundly immoral behavior, and it is related to acts that cause unnecessary pain and suffering to others. Evil is commonly seen as the opposite, or sometimes absence, of good. It can be an extreme ...
s, but without them we could never come to know God. According to Irenaeus, the high point in salvation history is the advent of
Jesus Jesus (AD 30 or 33), also referred to as Jesus Christ, Jesus of Nazareth, and many Names and titles of Jesus in the New Testament, other names and titles, was a 1st-century Jewish preacher and religious leader. He is the Jesus in Chris ...
. For Irenaeus, the Incarnation of
Christ Jesus ( AD 30 or 33), also referred to as Jesus Christ, Jesus of Nazareth, and many other names and titles, was a 1st-century Jewish preacher and religious leader. He is the Jesus in Christianity, central figure of Christianity, the M ...
was intended by God before he determined that humanity would be created. Irenaeus develops this idea based o
Rom. 5:14
saying "Forinasmuch as He had a pre-existence as a saving Being, it was necessary that what might be saved should also be called into existence, in order that the Being who saves should not exist in vain." Some theologians maintain that Irenaeus believed that Incarnation would have occurred even if humanity had never sinned; but the fact that they did
sin In religious context, sin is a transgression against divine law or a law of the deities. Each culture has its own interpretation of what it means to commit a sin. While sins are generally considered actions, any thought, word, or act considered ...
determined his role as the
savior Savior or saviour may refer to: *A person who helps people achieve salvation, or saves them from something Religion * Mahdi, the prophesied redeemer of Islam who will rule for seven, nine or nineteen years * Maitreya * Messiah, a saviour or li ...
. Irenaeus sees Christ as the new Adam, who systematically ''undoes'' what Adam did: thus, where Adam was disobedient concerning God's edict concerning the fruit of the
Tree of Knowledge of Good and Evil In Christianity and Judaism, the tree of the knowledge of good and evil (, ; ) is one of two specific trees in the story of the Garden of Eden in Genesis 2–3, along with the tree of life. Alternatively, some scholars have argued that the tre ...
, Christ was obedient even to death on the wood of a tree. Irenaeus is the first to draw comparisons between
Eve Eve is a figure in the Book of Genesis in the Hebrew Bible. According to the origin story, "Creation myths are symbolic stories describing how the universe and its inhabitants came to be. Creation myths develop through oral traditions and there ...
and Mary, contrasting the faithlessness of the former with the faithfulness of the latter. In addition to reversing the wrongs done by Adam, Irenaeus thinks of Christ as "recapitulating" or "summing up" human life. Irenaeus conceives of our salvation as essentially coming about through the
incarnation Incarnation literally means ''embodied in flesh'' or ''taking on flesh''. It is the Conception (biology), conception and the embodiment of a deity or spirit in some earthly form or an Anthropomorphism, anthropomorphic form of a god. It is used t ...
of God as a man. He characterizes the penalty for sin as death and
corruption Corruption is a form of dishonesty or a criminal offense that is undertaken by a person or an organization that is entrusted in a position of authority to acquire illicit benefits or abuse power for one's gain. Corruption may involve activities ...
. God, however, is
immortal Immortality is the ability to live forever, or eternal life. Immortal or Immortality may also refer to: Film * ''The Immortals'' (1995 film), an American crime film * ''Immortality'', an alternate title for the 1998 British film '' The Wisdom of ...
and incorruptible, and simply by becoming united to human nature in Christ he conveys those qualities to us: they spread, as it were, like a benign infection. Irenaeus emphasizes that salvation occurs through Christ's Incarnation, which bestows incorruptibility on humanity, rather than emphasizing His Redemptive death in the
crucifixion Crucifixion is a method of capital punishment in which the condemned is tied or nailed to a large wooden cross, beam or stake and left to hang until eventual death. It was used as a punishment by the Achaemenid Empire, Persians, Ancient Carthag ...
, although the latter event is an integral part of the former.


Christ's life

Part of the process of recapitulation is for Christ to go through every stage of human life, from infancy to old age, and simply by living it, sanctify it with his divinity. Irenaeus believed Christ did not die until he was older than is conventionally portrayed. In the passage of ''Adversus Haereses'' under consideration, Irenaeus claims that after receiving baptism at the age of thirty, citing Luke 3:23, Gnostics then falsely assert that "He
esus Esus is a Celtic god known from iconographic, epigraphic, and literary sources. The 1st-century CE Roman poet Lucan's epic ''Pharsalia'' mentions Esus, Taranis, and Teutates as gods to whom the Gauls sacrificed humans. This rare mention of Cel ...
preached only one year reckoning from His baptism," and also, "On completing His thirtieth year He
esus Esus is a Celtic god known from iconographic, epigraphic, and literary sources. The 1st-century CE Roman poet Lucan's epic ''Pharsalia'' mentions Esus, Taranis, and Teutates as gods to whom the Gauls sacrificed humans. This rare mention of Cel ...
suffered, being in fact still a young man, and who had by no means attained to advanced age." Irenaeus argues against the Gnostics by using scripture to add several years after his baptism by referencing 3 distinctly separate visits to Jerusalem. The first is when Jesus makes wine out of water, he goes up to the Paschal feast-day, after which he withdraws and is found in Samaria. The second is when Jesus goes up to Jerusalem for Passover and cures the paralytic, after which he withdraws over the sea of Tiberias. The third mention is when he travels to Jerusalem, eats the Passover, and suffers on the following day. Irenaeus quotes scripture (John 8:57), to suggest that Jesus ministers while in his 40s. In this passage, Jesus's opponents want to argue that Jesus has not seen Abraham, because Jesus is too young. Jesus's opponents argue that Jesus was not yet 50 years old. Irenaeus argues that if Jesus were in his thirties, his opponents would have argued that he was not yet 40 years old, since that would make him even younger. Irenaeus's argument is that they would not weaken their own argument by adding years to Jesus's age. Irenaeus also writes: "The Elders witness to this, who in Asia conferred with John the Lord's disciple, to the effect that John had delivered these things unto them: for he abode with them until the times of Trajan. And some of them saw not only John, but others also of the Apostles, and had this same account from them, and witness to the aforesaid relation." In Demonstration (74) Irenaeus notes "For
Pontius Pilate Pontius Pilate (; ) was the Roman administration of Judaea (AD 6–135), fifth governor of the Judaea (Roman province), Roman province of Judaea, serving under Emperor Tiberius from 26/27 to 36/37 AD. He is best known for being the official wh ...
was governor of Judæa, and he had at that time resentful enmity against Herod the king of the Jews. But then, when Christ was brought to him bound, Pilate sent Him to Herod, giving command to enquire of him, that he might know of a certainty what he should desire concerning Him; making Christ a convenient occasion of reconciliation with the king." Pilate was the
prefect Prefect (from the Latin ''praefectus'', substantive adjectival form of ''praeficere'': "put in front", meaning in charge) is a magisterial title of varying definition, but essentially refers to the leader of an administrative area. A prefect' ...
of the Roman province of
Judaea Judea or Judaea (; ; , ; ) is a mountainous region of the Levant. Traditionally dominated by the city of Jerusalem, it is now part of Palestine and Israel. The name's usage is historic, having been used in antiquity and still into the prese ...
from AD 26–36. He served under Emperor
Tiberius Tiberius Julius Caesar Augustus ( ; 16 November 42 BC – 16 March AD 37) was Roman emperor from AD 14 until 37. He succeeded his stepfather Augustus, the first Roman emperor. Tiberius was born in Rome in 42 BC to Roman politician Tiberius Cl ...
. Herod Antipas was tetrarch of Galilee and Perea, a client state of the Roman Empire. He ruled from 4 BC to 39 AD. In refuting Gnostic claims that Jesus preached for only one year after his baptism, Irenaeus used the "recapitulation" approach to demonstrate that by living beyond the age of thirty Christ sanctified even old age.


Use of Paul's Epistles

Many aspects of Irenaeus's presentation of salvation history depend on Paul's Epistles. Irenaeus's conception of salvation relies heavily on the understanding found in Paul's letters. Irenaeus first brings up the theme of victory over sin and evil that is afforded by Jesus's death. God's intervention has saved humanity from the Fall of Adam and the wickedness of Satan. Human nature has become joined with God's in the person of Jesus, thus allowing human nature to have victory over sin. Paul writes on the same theme, that Christ has come so that a new order is formed, and being under the Law, is being under the sin of Adam. Reconciliation is also a theme of Paul's that Irenaeus stresses in his teachings on Salvation. Irenaeus believes Jesus coming in flesh and blood sanctified humanity so that it might again reflect the perfection associated with the likeness of the Divine. This perfection leads to a new life, in the lineage of God, which is forever striving for eternal life and unity with the Father. This is a carryover from Paul, who attributes this reconciliation to the actions of Christ: "For since death came through a human being, the resurrection of the dead has also come through a human being; for as all die in Adam, so all will be made alive in Christ". A third theme in both Paul's and Irenaeus's conceptions of salvation is the sacrifice of Christ being necessary for the new life given to humanity in the triumph over evil. It is in this obedient sacrifice that Jesus is victor and reconciler, thus erasing the marks that Adam left on human nature. To argue against the Gnostics on this point, Irenaeus uses Colossians in showing that the debt which came by a tree has been paid for us in another tree. Furthermore, the first chapter of
Ephesians The Epistle to the Ephesians is the tenth book of the New Testament. Traditionally believed to have been written by the Apostle Paul around AD 62 during his imprisonment in Rome, the Epistle to the Ephesians closely resembles Colossians ...
is picked up in Irenaeus's discussion of the topic when he asserts, "By His own blood He redeemed us, as also His apostle declares, 'In whom we have redemption through His blood, even the remission of sins.'" The frequencies of quotations and allusions to the Pauline Epistles in ''Against Heresies'' are:


Christ as the New Adam

To counter his Gnostic opponents, Irenaeus significantly develops Paul's presentation of Christ as the
Last Adam The Last Adam, also given as the Final Adam or the Ultimate Adam, is a title given to Jesus in the New Testament. Similar titles that also refer to Jesus include Second Adam and New Adam. Twice in the New Testament an explicit comparison is m ...
. Irenaeus's presentation of Christ as the New Adam is based on Paul's Christ-Adam parallel in , but also derives significantly from the Johannine presentation of the Adam-Christ typology. Irenaeus uses this parallel to demonstrate that Christ truly took human flesh. Irenaeus considered it important to emphasize this point because he understands the failure to recognize Christ's full humanity the bond linking the various strains of Gnosticism together, as seen in his statement that "according to the opinion of no one of the heretics was the Word of God made flesh." Irenaeus believes that unless the Word became flesh, humans were not fully redeemed. He explains that by becoming man, Christ restored humanity to being in the image and likeness of God, which they had lost in the
Fall of man The fall of man, the fall of Adam, or simply the Fall, is a term used in Christianity to describe the transition of the first man and woman from a state of innocent obedience to God in Christianity, God to a state of guilty disobedience. * * * * ...
. Just as Adam was the original head of humanity through whom all sinned, Christ is the new head of humanity who fulfills Adam's role in the Economy of Salvation. Irenaeus calls this process of restoring humanity recapitulation. For Irenaeus, Paul's presentation of the Old Law (the
Mosaic covenant Abrahamic religions believe in the Mosaic covenant (named after Moses), also known as the Sinaitic covenant (after the biblical Mount Sinai), which refers to a covenant between the Israelite tribes and God, including their proselytes, not lim ...
) in this passage indicates that the Old Law revealed humanity's sinfulness but could not save them. He explains that "For as the law was spiritual, it merely made sin to stand out in relief, but did not destroy it. For sin had no dominion over the spirit, but over man." Since humans have a physical nature, they cannot be saved by a spiritual law. Instead, they need a human Savior. This is why it was necessary for Christ to take human flesh. Irenaeus summarizes how Christ's taking human flesh saves humanity with a statement that closely resembles , "For as by the disobedience of the one man who was originally moulded from virgin soil, the many were made sinners, and forfeited life; so was it necessary that, by the obedience of one man, who was originally born from a virgin, many should be justified and receive salvation." The physical creation of Adam and Christ is emphasized by Irenaeus to demonstrate how the Incarnation saves humanity's physical nature. Irenaeus emphasizes the importance of Christ's reversal of Adam's action. Through His obedience, Christ undoes Adam's disobedience. Irenaeus presents the Passion as the climax of Christ's obedience, emphasizing how this obedience on the tree of the Cross undoes the disobedience that occurred through a tree. Irenaeus's interpretation of Paul's discussion of Christ as the New Adam is significant because it helped develop the
recapitulation theory of atonement The recapitulation theory of the atonement is a doctrine in Christian theology related to the meaning and effect of the death of Jesus Christ. While it is sometimes absent from summaries of atonement theories, more comprehensive overviews of the ...
. Irenaeus emphasizes that it is through Christ's reversal of Adam's action that humanity is saved, rather than considering the Redemption to occur in a cultic or juridical way. The biblical passage, "Death has been swallowed up in victory", implied for Irenaeus that the Lord will surely resurrect the first human, i.e. Adam, as one of the saved. According to Irenaeus, those who deny Adam's salvation are “shutting themselves out from life for ever” and the first one who did so was
Tatian Tatian of Adiabene, or Tatian the Syrian or Tatian the Assyrian, (; ; ; ; – ) was an Assyrian Christian writer and theologian of the 2nd century. Tatian's most influential work is the Diatessaron, a Biblical paraphrase, or "harmony", of the ...
. The notion that the Second Adam saved the first Adam was advocated not only by Irenaeus, but also by
Gregory Thaumaturgus Gregory Thaumaturgus or Gregory the Miracle-Worker (, ; ; ), also known as Gregory of Neocaesarea, was a Christian bishop of the 3rd century. He has been canonized as a saint in the Catholic and Orthodox Churches. Biography Gregory was born arou ...
, which suggests that it was popular in the Early Church.


Valentinian Gnosticism

Valentinian Gnosticism was one of the major forms of Gnosticism that Irenaeus opposed. According to the Gnostic view of Salvation, creation was perfect to begin with; it did not need time to grow and mature. For the Valentinians, the material world is the result of the loss of perfection which resulted from Sophia's desire to understand the Forefather. Therefore, one is ultimately redeemed, through secret knowledge, to enter the
pleroma Pleroma (, literally "fullness") generally refers to the totality of divine powers. It is used in Christian theological contexts, as well as in Gnosticism. The term also appears in the Epistle to the Colossians, which is traditionally attributed ...
of which the Achamoth originally fell. According to the Valentinian Gnostics, there are three classes of human beings. They are the material, who cannot attain salvation; the psychic, who are strengthened by works and faith (they are part of the church); and the spiritual, who cannot decay or be harmed by material actions. Essentially, ordinary humans—those who have faith but do not possess the special knowledge—will not attain salvation. Spirituals, on the other hand—those who obtain this great gift—are the only class that will eventually attain salvation. In his article entitled "The Demiurge", J.P. Arendzen sums up the Valentinian view of the salvation of man. He writes, "The first, or carnal men, will return to the grossness of matter and finally be consumed by fire; the second, or psychic men, together with the Demiurge as their master, will enter a middle state, neither heaven (pleroma) nor hell (whyle); the purely spiritual men will be completely freed from the influence of the Demiurge and together with the Saviour and Achamoth, his spouse, will enter the pleroma divested of body (húle) and soul (psuché)." In this understanding of salvation, the purpose of the Incarnation was to redeem the Spirituals from their material bodies. By taking a material body, the Son becomes the Savior and facilitates this entrance into the pleroma by making it possible for the Spirituals to receive his spiritual body. However, in becoming a body and soul, the Son Himself becomes one of those needing redemption. Therefore, the Word descends onto the Savior at His Baptism in the Jordan, which liberates the Son from his corruptible body and soul. His redemption from the body and soul is then applied to the Spirituals. In response to this Gnostic view of Christ, Irenaeus emphasized that the Word became flesh and developed a soteriology that emphasized the significance of Christ's material Body in saving humanity, as discussed in the sections above. In his criticism of Gnosticism, Irenaeus made reference to a Gnostic gospel which portrayed
Judas Judas Iscariot (; ; died AD) was, according to Christianity's four canonical gospels, one of the original Twelve Apostles of Jesus Christ. Judas betrayed Jesus to the Sanhedrin in the Garden of Gethsemane, in exchange for thirty pieces of ...
in a positive light, as having acted in accordance with Jesus's instructions. The recently discovered
Gospel of Judas The Gospel of Judas is a non-canonical religious text. Its content consists of conversations between Jesus and his disciples, especially Judas Iscariot. The only copy of it known to exist is a Coptic language text that is part of the Codex ...
dates close to the period when Irenaeus lived (late 2nd century), and scholars typically regard this work as one of many Gnostic texts, showing one of many varieties of Gnostic beliefs of the period.


Quartodeciman Controversy

Irenaeus took part in the Quartodeciman Controversy. When Victor I of Rome tried to force a universal practice of fasting until Easter to supersede the Jewish practice and prevent Christians from partaking of the Passover,
Polycrates Polycrates (; ), son of Aeaces (father of Polycrates), Aeaces, was the tyrant of Samos from the 540s BC to 522 BC. He had a reputation as both a fierce warrior and an enlightened tyrant. Sources The main source for Polycrates' life and activi ...
who led the Churches of Anatolia continued to hold old traditions of the paschal feast. For this reason Victor I wanted to excommunicate Polycrates and his supporters, but this was a step too far for Irenaeus and other bishops.


See also

* Descriptions in antiquity of the execution cross * POxy 405 – 3rd-century papyrus portion of ''Against Heresies''


Notes


References


Citations


Sources

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Steenberg, Ireaneus M.C. "The Role of Mary as Co-Recapitulator in St. Irenaeus of Lyons." ''Vigilae Christianae'' 58 (2004):117–137. * *


Further reading

* Irenaeus, ''Proof of the Apostolic Preaching'', trans JP Smith, (ACW 16, 1952) * Irenaeus, ''Proof of the Apostolic Preaching'', trans John Behr (PPS, 1997) * Irenaeus
''Against Heresies''
, trans. Alexander Roberts and William Rambaut, in ''Ante-Nicene Fathers'', vol. 1, ed. Alexander Roberts, James Donaldson, and A. Cleveland Coxe (Buffalo, NY: Christian Literature Co., 1885). * * * * * * Payton Jr., James R. ''Irenaeus on the Christian Faith: A Condensation of 'Against Heresies'' (Cambridge, James Clarke and Co Ltd, 2012). * * * *


External links







* ttps://web.archive.org/web/20060925041929/http://www.ccel.org/fathers2/ANF-01/TOC.htm A nineteenth-century translation of Irenaeus's work*
Demonstration of the Apostolic Preaching
*

where Irenaeus argues his unconventional views about the age of Jesus and the length of his ministry.
EarlyChurch.org.uk
Extensive bibliography. * *

Pope Benedict XVI Pope BenedictXVI (born Joseph Alois Ratzinger; 16 April 1927 – 31 December 2022) was head of the Catholic Church and sovereign of the Vatican City State from 19 April 2005 until his resignation on 28 February 2013. Benedict's election as p ...
on St. Irenaeus
Gregory S. Neal: "The Nature of Evil and the Irenaean Theodicy" ''Grace Incarnate'' (1988)


Elaine H. Pagels
Critique of Pagel's article by Paul Mankowski


* ttp://www.bartleby.com/210/6/281.html "St. Irenæus, Bishop of Lyons, Martyr" ''Butler's Lives of the Saints''
"Catholic Online"

"Santiebeati"
* a lecture by James L. Papandrea {{Authority control 140s births 200s deaths 2nd-century apocalypticists 2nd-century bishops in Gaul 2nd-century Christian saints 2nd-century Christian theologians 2nd-century Greek writers 2nd-century Romans 3rd-century apocalypticists 3rd-century Greek writers 3rd-century Romans Ancient Smyrnaeans Anglican saints Bishops of Lyon Catholic Mariology Christian anti-Gnosticism Christian apologists Church Fathers Gallo-Roman saints Roman Lyon Saints from Roman Anatolia Doctors of the Church Mariologists