Branch theory is an
ecclesiological proposition that the
One, Holy, Catholic, and Apostolic Church includes various different Christian denominations whether in formal
communion or not. The theory is often incorporated in the
Protestant notion of an invisible Christian Church structure binding them together.
Anglican proponents of
Anglo-Catholic churchmanship who support the theory include only the
Roman Catholic
The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...
,
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 ...
,
Oriental Orthodox, Scandinavian
Lutheran
Lutheranism is a major branch of Protestantism that emerged under the work of Martin Luther, the 16th-century German friar and Protestant Reformers, reformer whose efforts to reform the theology and practices of the Catholic Church launched ...
,
Old Catholic,
Moravian,
Persian and Anglican churches as branches.
On the other hand, the majority of Anglicans, including those of
low,
broad and
high churchmanship, have "followed the major continental Reformers in their doctrine of the true church, identifiable by the authentic ministry of word and sacrament, in their rejection of the jurisdiction of the pope, and in their alliance with the civil authority ('the magistrate')".
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, ...
historically considered itself "Protestant and Reformed" and recognized as true churches the
Continental Reformed Churches, participating in the
Synod of Dort
The Synod of Dort (also known as the Synod of Dordt or the Synod of Dordrecht) was a European transnational Synod held in Dordrecht in 1618–1619, by the Dutch Reformed Church, to settle a divisive controversy caused by the rise of Arminianism. ...
in 1618–1619.
As such, Anglicans have entered into full communion with bodies such as the member churches of the
Porvoo Communion and the
Mar Thoma Syrian Church. In some countries, Anglicans have merged with
Methodist
Methodism, also called the Methodist movement, is a Protestant Christianity, Christian Christian tradition, tradition whose origins, doctrine and practice derive from the life and teachings of John Wesley. George Whitefield and John's brother ...
s,
Presbyterian
Presbyterianism is a historically Reformed Protestant tradition named for its form of church government by representative assemblies of elders, known as "presbyters". Though other Reformed churches are structurally similar, the word ''Pr ...
s and
Lutheran
Lutheranism is a major branch of Protestantism that emerged under the work of Martin Luther, the 16th-century German friar and Protestant Reformers, reformer whose efforts to reform the theology and practices of the Catholic Church launched ...
s to form
united Protestant Churches, such as the
Church of North India,
Church of Pakistan
The Church of Pakistan is a united Protestant church in Pakistan founded in 1970; it holds membership in the Anglican Communion, the World Communion of Reformed Churches,Database (9 February 2006)"Sialkot Diocese of the Church of Pakistan". R ...
,
Church of South India, and the
Church of Bangladesh; these churches self-identify as "Anglican" and are part of the
Anglican Communion
The Anglican Communion is a Christian Full communion, communion consisting of the Church of England and other autocephalous national and regional churches in full communion. The archbishop of Canterbury in England acts as a focus of unity, ...
.
Other Protestant Christians, including
Evangelical Anglicans, generally reject the Anglo-Catholic version of the branch theory and hold a theory in which the
Christian Church
In ecclesiology, the Christian Church is what different Christian denominations conceive of as being the true body of Christians or the original institution established by Jesus Christ. "Christian Church" has also been used in academia as a syn ...
"has no
visible unity" but contains numerous
denominations that are "
invisibly connected."
Fortescue states that "this theory is common among all Protestant bodies, although each one generally holds that it is the purest branch."
For Anglicans of evangelical churchmanship, the notion of apostolic continuity is seen as "fidelity to the teaching of the apostles as set out in scripture, rather than in historical or institutional terms" and thus they place focus on "the gospel, and the means by which this is proclaimed, articulated, and reinforced--namely, the ministers of word and sacrament."
In expounding upon branch theory, theologian
Paul Evdokimov states that some view each distinct Christian tradition as contributing something special to the whole of Christendom:
The famous "branch theory", according to which each ecclesiastical tradition possesses only part of the truth, so that the true Church will come into being only when they all join together; such a belief encourages the "churches" to continue as they are, confirming in their fragmented state, and the final result is Christianity without the Church. Each church, in its more pronounced form, displays, according to its own native spirit, a particular version of the unique revelation. So, for example, Roman Christianity is characterized by filial love and obedience expressed towards the fatherly authority hypostatized in the first Person of the Trinity: the Church is there to teach and to obey. For the Reformed Churches the vital thing is sacramental reverence for the Word; it is the Church's duty to listen and reform itself. The Orthodox treasure the liberty of the children of God that flowers in liturgical communion, while the Church hymns the love of God for the human race.[ Evdokimov is not supporting the concept of "branch theory," but the opposite. From his point of view the Orthodox Church is complete in itself and the "Church" in the last sentence of this citation refers to it, not others.]
Views
Anglican
Charles Daubeny (1745–1827) formulated a branch theory in which the
One, Holy, Catholic, and Apostolic Church included the Anglican, Scandinavian Lutheran, Roman Catholic and Eastern Orthodox Churches; to this 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 ...
,
Moravian Church
The Moravian Church, or the Moravian Brethren ( or ), formally the (Latin: "Unity of the Brethren"), is one of the oldest Protestant denominations in Christianity, dating back to the Bohemian Reformation of the 15th century and the original ...
,
Church of the East, and
Old Catholic Churches
The terms Old Catholic Church, Old Catholics, Old-Catholic churches, or Old Catholic movement, designate "any of the groups of Western Christians who believe themselves to maintain in complete loyalty the doctrine and traditions of the undiv ...
were also added.
The theory was popularized during the
Oxford Movement, particularly through the work of the
Tractarians. Although the
Anglican Roman Catholic International Commission, an organization sponsored by the
Anglican Consultative Council and the
Pontifical Council for Promoting Christian Unity, seeks to make ecumenical progress between the Roman Catholic Church and the Anglican Communion, it has made no statement on the topic. The theory "has received mixed reception even within the Anglican Communion."
The majority of Anglicans, including those of
low church,
broad church and
high church
A ''high church'' is a Christian Church whose beliefs and practices of Christian ecclesiology, Christian liturgy, liturgy, and Christian theology, theology emphasize "ritual, priestly authority, ndsacraments," and a standard liturgy. Although ...
manship, have "followed the major continental Reformers in their doctrine of the true church, identifiable by the authentic ministry of word and sacrament, in their rejection of the jurisdiction of the pope, and in their alliance with the civil authority ('the magistrate')".
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, ...
historically considered itself "Protestant and Reformed" and recognized as true churches the
Continental Reformed Churches, participating in the
Synod of Dort
The Synod of Dort (also known as the Synod of Dordt or the Synod of Dordrecht) was a European transnational Synod held in Dordrecht in 1618–1619, by the Dutch Reformed Church, to settle a divisive controversy caused by the rise of Arminianism. ...
in 1618–1619;
in 1567,
Edmund Grindal, who became the Church of England's
Archbishop of Canterbury
The archbishop of Canterbury is the senior bishop and a principal leader of the Church of England, the Primus inter pares, ceremonial head of the worldwide Anglican Communion and the bishop of the diocese of Canterbury. The first archbishop ...
, declared that "all reformed churches do differ in rites and ceremonies, but we agree with all reformed churches in substance of doctrine."
As such, Anglicans have entered into full communion with bodies such as the
Evangelical Church in Germany and in some countries, have merged with Methodist, Presbyterian and Lutheran denominations to form
united Protestant Churches, such as the
Church of North India,
Church of Pakistan
The Church of Pakistan is a united Protestant church in Pakistan founded in 1970; it holds membership in the Anglican Communion, the World Communion of Reformed Churches,Database (9 February 2006)"Sialkot Diocese of the Church of Pakistan". R ...
,
Church of South India, and the
Church of Bangladesh for example.
For
Anglicans of Evangelical churchmanship, the notion of apostolic continuity is seen as "fidelity to the teaching of the apostles as set out in scripture, rather than in historical or institutional terms" and thus they place focus on "the gospel, and the means by which this is proclaimed, articulated, and reinforced--namely, the ministers of word and sacrament."
Catholic
The Catholic Church does not accept that those churches separated by schism or heresy are part of the
one true church
The expression "one true church" refers to an ecclesiological position asserting that Jesus gave his authority in the Great Commission solely to a particular visible Christian institutional church—what is commonly called a denomination. This ...
, maintaining that "there exists a single Church of Christ, which subsists in the Catholic Church, governed by the Successor of Peter and by the Bishops in communion with him".
[''Dominus Iesus'', 17]
Several Popes have explicitly condemned the Anglican "branch theory". The Catholic Church additionally rejects the validity of Anglican Orders, defined formally in 1896 by Pope
Leo XIII in the
Papal Bull
A papal bull is a type of public decree, letters patent, or charter issued by the pope of the Catholic Church. It is named after the leaden Seal (emblem), seal (''bulla (seal), bulla'') traditionally appended to authenticate it.
History
Papal ...
Apostolicae curae, which declares Anglican Orders "absolutely null and utterly void".
Soon after the formulation of the branch theory, in 1864, the
Holy Office rejected the branch theory or idea that "the three Christian communions, Catholic, Greek schismatic, and Anglican, however separated and divided from one another, nevertheless with equal right claim for themselves the name "Catholic" and "together now constitute the Catholic Church". In 1870, English bishops attending the First Vatican Council raised objections to the expression Sancta Romana Catholica Ecclesia ("Holy Roman Catholic Church") which appeared in the schema (the draft) of the
First Ecumenical Council of the Vatican's Dogmatic Constitution on the Catholic Faith, ''
Dei Filius''.
These bishops proposed that the word "Roman" be omitted or at least that
comma
The comma is a punctuation mark that appears in several variants in different languages. Some typefaces render it as a small line, slightly curved or straight, but inclined from the vertical; others give it the appearance of a miniature fille ...
s be inserted between the adjectives, out of concern that use of the term "Roman Catholic" would lend support to proponents of the branch theory. While the council overwhelmingly rejected this proposal, the text was finally modified to read "Sancta Catholica Apostolica Romana Ecclesia" translated into English either as "the holy Catholic Apostolic Roman Church" or, by separating each adjective, as "the holy, Catholic, Apostolic, and Roman Church".
The 2000 declaration ''
Dominus Iesus'' by the
Congregation of the Doctrine of the Faith reaffirmed that "there exists a single Church of Christ, which subsists in the Catholic Church, governed by the Successor of Peter and by the Bishops in communion with him" and that "the Christian faithful are therefore not permitted to imagine that the Church of Christ is nothing more than a collection - divided, yet in some way one - of Churches and ecclesial communities".
Both lungs concept
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 ...
and
Pope John Paul II
Pope John Paul II (born Karol Józef Wojtyła; 18 May 19202 April 2005) was head of the Catholic Church and sovereign of the Vatican City State from 16 October 1978 until Death and funeral of Pope John Paul II, his death in 2005.
In his you ...
used the "two lungs" concept to relate the
Latin Church
The Latin Church () is the largest autonomous () particular church within the Catholic Church, whose members constitute the vast majority of the 1.3 billion Catholics. The Latin Church is one of 24 Catholic particular churches and liturgical ...
with the
Eastern Catholic Churches
The Eastern Catholic Churches or Oriental Catholic Churches, also known as the Eastern-Rite Catholic Churches, Eastern Rite Catholicism, or simply the Eastern Churches, are 23 Eastern Christian autonomous (''sui iuris'') particular churches of ...
.
Eastern Orthodox
Non-acceptance of the branch theory by the Eastern Orthodox Church, was in 1853 called unfortunate by the theory's proponent,
William Palmer, who wished the Eastern Church to claim to be no more than a part of the whole, not the whole of the true Church. Bishop
Kallistos Ware says that "Orthodox writers sometimes speak as if they accepted the 'Branch Theory', once popular among
High Church
A ''high church'' is a Christian Church whose beliefs and practices of Christian ecclesiology, Christian liturgy, liturgy, and Christian theology, theology emphasize "ritual, priestly authority, ndsacraments," and a standard liturgy. Although ...
Anglicans", but explains that this opinion "cannot be reconciled with traditional Orthodox theology".
Western Orthodox cleric
Julian Joseph Overbeck writes:
In its official declarations, the Eastern Orthodox Church states that the one true church founded by Jesus Christ is a real identifiable entity and that it is singularly the Orthodox Catholic Church. It has identified itself as the "
One, Holy, Catholic, and Apostolic Church" in, for instance, synods held in 1836 and 1838 and in its correspondence with
Pope Pius IX
Pope Pius IX (; born Giovanni Maria Battista Pietro Pellegrino Isidoro Mastai-Ferretti; 13 May 1792 – 7 February 1878) was head of the Catholic Church from 1846 to 1878. His reign of nearly 32 years is the longest verified of any pope in hist ...
and
Pope Leo XIII.
Adrian Fortescue wrote of the Eastern Orthodox: "The idea of a church made up of mutually excommunicate bodies that teach different articles of faith and yet altogether form one Church is as inconceivable to them as it is to us (Catholics)". The Eastern Orthodox Church regards neither Catholics nor Protestants as branches of the "
One True Church
The expression "one true church" refers to an ecclesiological position asserting that Jesus gave his authority in the Great Commission solely to a particular visible Christian institutional church—what is commonly called a denomination. This ...
".
The Eastern Orthodox Church is a part of several
ecumenical efforts on international, national, and regional levels, such as the
World Council of Churches.
With respect to branch theory, some conservative Eastern Orthodox, however, take a decidedly anti-ecumenical stand. For example, in 1983 Metropolitan
Philaret (Voznesensky) and the Holy Synod of Bishops of the
Russian Orthodox Church Outside Russia stated:
In addition, the Jubilee Council of 2000 of the
Church of Russia also condemned "Divided Church" Ecclesiology or the so-called Branch Theory.
Oriental Orthodoxy
It is considered by many that the
Chalcedonian Schism resulted from a difference in semantics rather than actual doctrine, stating that both non-Chalcedonian and
Chalcedonian Christianity
Chalcedonian Christianity is the branches of Christianity that accept and uphold theological resolutions of the Council of Chalcedon, the fourth ecumenical council, held in AD 451. Chalcedonian Christianity accepts the Christological Definiti ...
share a similar
Christology
In Christianity, Christology is a branch of Christian theology, theology that concerns Jesus. Different denominations have different opinions on questions such as whether Jesus was human, divine, or both, and as a messiah what his role would b ...
despite choosing to express it in different (Cyrillian vs. Chalcedonian) terms, and theological dialogue has resulted in formal statements of agreement on that issue, which have been officially accepted by groups on both sides. The Orthodoxy Cognate PAGE Society (Society for Orthodox Christian Unity and Faith), which is headquartered in
India
India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
declares the Society's firm belief that, although "the two groups are not in communion with each other", "both the Byzantine (Eastern) Orthodox Churches and the Oriental Orthodox Churches are the true heirs to the One, Holy, Catholic and Apostolic Church of Christ, which was the Church of the apostles and the holy fathers. We also believe these Churches teach the true faith and morals of the Church established by Christ for which the ancient martyrs gave their lives."
Analogous theories
Branches of the Evangelical Church theory
In ''
Church Dogmatics'',
Karl Barth, defined the "Evangelical Church" as having three branches:
Lutheran
Lutheranism is a major branch of Protestantism that emerged under the work of Martin Luther, the 16th-century German friar and Protestant Reformers, reformer whose efforts to reform the theology and practices of the Catholic Church launched ...
,
Reformed, and
Anglican
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 ...
.
The "Evangelical Church" was to be distinguished from what he termed the "three heresies of Neoprotestantism, Roman Catholicism and Eastern Orthodoxy".
Sister churches theory
What has been called another version of the branch theory was propounded in the wake of the
Second Vatican Council by some Roman Catholic theologians, such as
Robert F. Taft Michael A. Fahey, and others.
In this theory, the
Eastern Orthodox Church
The Eastern Orthodox Church, officially the Orthodox Catholic Church, and also called the Greek Orthodox Church or simply the Orthodox Church, is List of Christian denominations by number of members, one of the three major doctrinal and ...
and the
Roman 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 ...
are two "sister churches". This theory was rejected outright by the Catholic Church, which applies the term "sister Churches" only to the relations between
particular Church
In metaphysics, particulars or individuals are usually contrasted with ''universals''. Universals concern features that can be exemplified by various different particulars. Particulars are often seen as concrete, spatiotemporal entities as opposed ...
es, such as the sees of Constantinople and Rome. Most Eastern Orthodox theologians also reject it.
[
A writer in the United States publication ''Orthodox Life'' says that ]ecumenism
Ecumenism ( ; alternatively spelled oecumenism)also called interdenominationalism, or ecumenicalismis the concept and principle that Christians who belong to different Christian denominations should work together to develop closer relationships ...
promotes the idea of a Church comprising all baptized Christians and within which the different confessions are "sister churches".[Article "Orthodox-Roman Catholic dialogue and of the ideas of 'Sister Churches' or of the Churches as 'two lungs' of the Body as contemporary expressions of the despised 'branch theory' of ecclesiology" in ''Orthodox Life'', Volumes 57-58, 2006, p. 26 ("sister churches")]
/ref>
Two lungs theory
The metaphor of Christianity compared to one body breathing with two lungs was coined by the Russian poet and philosopher Vyacheslav Ivanov, inspired by the worldview of the 19th century Russian philosopher Vladimir Solovyov. Solovyov "felt that eastern Christians could learn from the Western church's relatively active presence in the world."
Ivanov accepted "the idea of ' Unia'", according to Robert Bird, the "combination of traditional rite and papal authority explains why Ivanov felt he was now breathing with both lungs." Pope John Paul II
Pope John Paul II (born Karol Józef Wojtyła; 18 May 19202 April 2005) was head of the Catholic Church and sovereign of the Vatican City State from 16 October 1978 until Death and funeral of Pope John Paul II, his death in 2005.
In his you ...
, according to Bird, "adopted Ivanov's imagery of the two 'lungs' of the universal Church" but John Paul II's "image of the full Church seems to presume their equal coexistence, supposedly without the submission of the East to papal authority."
John Paul II used the two lungs of a single body metaphor in the context of "the different forms of the Church's great tradition" in ' (1987). John Paul II used the metaphor to "the Church", which for him was not some amalgam of the Catholic and Eastern Orthodox Church, but the Catholic Church itself, thus indicating that the Catholic Church must avail itself of the traditions of both Eastern Christianity
Eastern Christianity comprises Christianity, Christian traditions and Christian denomination, church families that originally developed during Classical antiquity, classical and late antiquity in the Eastern Mediterranean region or locations fu ...
and Western Christianity
Western Christianity is one of two subdivisions of Christianity (Eastern Christianity being the other). Western Christianity is composed of the Latin Church and Protestantism, Western Protestantism, together with their offshoots such as the O ...
. The Catholic Church uses this metaphor to compare the Latin Church's tradition to the Eastern Orthodox Churches' traditions and also Eastern Catholic Churches
The Eastern Catholic Churches or Oriental Catholic Churches, also known as the Eastern-Rite Catholic Churches, Eastern Rite Catholicism, or simply the Eastern Churches, are 23 Eastern Christian autonomous (''sui iuris'') particular churches of ...
' traditions, as emphasized in the Second Vatican Council's ', the decree on Eastern Catholic Churches. John Paul II elaborated the metaphor, in ' (1990), "the Church itself, gathered in the one Spirit, breathes as though with two lungs of the East and of the West and that it burns with the love of Christ in one heart having two ventricles."
An anonymous author wrote, in ''Orthodox Life'' magazine, that the metaphor comparing the Eastern Orthodox Church and the Roman Catholic Church to two lungs of one body was "shaped and influenced by" the branch theory and developed by "Orthodox ecumenists and Papists". Eastern Orthodox reject as incompatible with the Orthodox faith any such use of the "two lungs" expression to imply that the Eastern Orthodox and Roman Catholic churches are two parts of a single church and "that Orthodoxy is only for Easterners, and that Catholicism is only for Westerners", according to Archpriest Andrew Phillips. Patriarch Bartholomew I of Constantinople "rejects the opinion" that "there would be an 'incompatibility between Orthodox tradition and the European cultural way', which would be antinomic" and points out that idea "is against the principle of equality and respect of peoples and cultural traditions on our continent."
Ion Bria wrote in 1991 that the metaphor "may be attractive as an aid for understanding the formation of two distinctive traditions in Christianity after A.D. 1054." In 2005, Bishop Hilarion Alfeyev, chairman of the Representation of the Russian Orthodox Church to the European Institutions, told the 6th Gniezno Convention that the metaphor is "particularly relevant" when he "proposed to form a European Catholic-Orthodox Alliance" and said "nothing should prevent us from uniting our efforts in order to defend Christian tradition, without waiting for the restoration of full unity between the two lungs of European Christianity."
References
; Citations
External links
Anglo-Orthodox perspective
{{DEFAULTSORT:Branch Theory
Anglican theology and doctrine
Anglo-Catholicism
Protestant theology