
Traditionally, an oath (from
Anglo-Saxon
The Anglo-Saxons, in some contexts simply called Saxons or the English, were a Cultural identity, cultural group who spoke Old English and inhabited much of what is now England and south-eastern Scotland in the Early Middle Ages. They traced t ...
', also a plight) is a
statement of
fact
A fact is a truth, true data, datum about one or more aspects of a circumstance. Standard reference works are often used to Fact-checking, check facts. Science, Scientific facts are verified by repeatable careful observation or measurement by ...
or a
promise taken by a
sacrality as a sign of
verity. A common legal substitute for those who object to making sacred oaths is to give an
affirmation instead. Nowadays, even when there is no notion of sanctity involved, certain promises said out loud in ceremonial or juridical purpose are referred to as oaths. "To
swear" is a
verb
A verb is a word that generally conveys an action (''bring'', ''read'', ''walk'', ''run'', ''learn''), an occurrence (''happen'', ''become''), or a state of being (''be'', ''exist'', ''stand''). In the usual description of English, the basic f ...
used to describe the taking of an oath; to make a solemn
vow
A vow ( Lat. ''votum'', vow, promise; see vote) is a promise or oath. A vow is used as a promise that is solemn rather than casual.
Marriage vows
Marriage vows are binding promises each partner in a couple makes to the other during a weddin ...
.
Etymology
The word comes from
Anglo-Saxon
The Anglo-Saxons, in some contexts simply called Saxons or the English, were a Cultural identity, cultural group who spoke Old English and inhabited much of what is now England and south-eastern Scotland in the Early Middle Ages. They traced t ...
': "judicial swearing, solemn appeal to deity in witness of truth or a promise"; from
Proto-Germanic
Proto-Germanic (abbreviated PGmc; also called Common Germanic) is the linguistic reconstruction, reconstructed proto-language of the Germanic languages, Germanic branch of the Indo-European languages.
Proto-Germanic eventually developed from ...
''
*aiþaz''; from
Proto-Indo-European
Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family. No direct record of Proto-Indo-European exists; its proposed features have been derived by linguistic reconstruction from documented Indo-Euro ...
''*oi-to-'': "an oath". Common to Celtic and Germanic, possibly a loan-word from one to the other, but the history is obscure and it may be non-Indo-European, in reference to careless invocations of divinity, from the late 12th century.
Historical development as a legal concept
Jewish tradition
The concept of oaths is deeply rooted within
Judaism
Judaism () is an Abrahamic religions, Abrahamic, Monotheism, monotheistic, ethnic religion that comprises the collective spiritual, cultural, and legal traditions of the Jews, Jewish people. Religious Jews regard Judaism as their means of o ...
. It is found in
Genesis 8:21, when God swears that he will "never again curse the ground because of man and never again smite every living thing". This repetition of the term ''never again'' is explained by
Rashi
Shlomo Yitzchaki (; ; ; 13 July 1105) was a French rabbi who authored comprehensive commentaries on the Talmud and Hebrew Bible. He is commonly known by the List of rabbis known by acronyms, Rabbinic acronym Rashi ().
Born in Troyes, Rashi stud ...
, the pre-eminent biblical commentator, as serving as an oath, citing the
Talmud
The Talmud (; ) is the central text of Rabbinic Judaism and the primary source of Jewish religious law (''halakha'') and Jewish theology. Until the advent of Haskalah#Effects, modernity, in nearly all Jewish communities, the Talmud was the cen ...
Shavous 36a for this ruling.
The first personage in the biblical tradition to take an oath is held to be
Eliezer
Eliezer () was the name of at least three different individuals in the Hebrew Bible.
Eliezer of Damascus
Eliezer of Damascus () was, according to Targum Jonathan Bereishit, 14:14, the son of Nimrod. As mentioned in Lech-Lecha#Sixth_reading— ...
, the chief servant of
Abraham
Abraham (originally Abram) is the common Hebrews, Hebrew Patriarchs (Bible), patriarch of the Abrahamic religions, including Judaism, Christianity, and Islam. In Judaism, he is the founding father who began the Covenant (biblical), covenanta ...
, when the latter requested of the former that he not take a wife for his son
Isaac
Isaac ( ; ; ; ; ; ) is one of the three patriarchs (Bible), patriarchs of the Israelites and an important figure in the Abrahamic religions, including Judaism, Christianity, Islam, and the Baháʼí Faith. Isaac first appears in the Torah, in wh ...
from the daughters of Canaan, but rather from among Abraham's own family.
The foundational text for oath making is in
Numbers
A number is a mathematical object used to count, measure, and label. The most basic examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers can ...
30:2: "When a man voweth a vow unto the Lord, or sweareth an oath to bind his soul with a bond, he shall not break his word; he shall do according to all that proceedeth out of his mouth." According to the Rabbis, a
neder
In Judaism, a neder (, plural ''nedarim'') is a kind of vow or oath. The neder may consist of performing some act in the future (either once or regularly) or abstaining from a particular type of activity of the person's choice. The concept of the ...
(usually translated as "vow") refers to the object, a ''shâmar'' (usually translated as "oath") to the person. The passage distinguishes between a ''neder'' and a ''shvua'', an important distinction between the two in
Halakha
''Halakha'' ( ; , ), also Romanization of Hebrew, transliterated as ''halacha'', ''halakhah'', and ''halocho'' ( ), is the collective body of Judaism, Jewish religious laws that are derived from the Torah, Written and Oral Torah. ''Halakha'' is ...
: a ''neder'' changes the status of some external thing, while a ''shvua'' initiates an internal change in the one who swears the oath.
Roman tradition
In the
Roman tradition, oaths were sworn upon ''
Iuppiter Lapis'' or the Jupiter Stone located in the
Temple of Jupiter,
Capitoline Hill. ''Iuppiter Lapis'' was held in the Roman tradition to be an
Oath Stone, an aspect of Jupiter in his role as divine law-maker responsible for order and used principally for the investiture of the oathtaking of office.
According to Cyril Bailey, in "The Religion of Ancient Rome" (1907):
The punisher of broken oaths was the
infernal deity
Orcus.
Hindu tradition

In
Hindu epics
Indian epic poetry is the epic poetry written in the Indian subcontinent, traditionally called ''Kavya'' (or ''Kāvya''; Sanskrit: काव्य, IAST: ''kāvyá''). The ''Ramayana'' and the '' Mahabharata'', which were originally composed i ...
, like the
Ramayana
The ''Ramayana'' (; ), also known as ''Valmiki Ramayana'', as traditionally attributed to Valmiki, is a smriti text (also described as a Sanskrit literature, Sanskrit Indian epic poetry, epic) from ancient India, one of the two important epics ...
and the
Mahabharata
The ''Mahābhārata'' ( ; , , ) is one of the two major Sanskrit Indian epic poetry, epics of ancient India revered as Smriti texts in Hinduism, the other being the ''Ramayana, Rāmāyaṇa''. It narrates the events and aftermath of the Kuru ...
, oaths, called ''pratigya'', are taken seriously. It is mentioned that people would give up their lives, but not break a vow. Due to this, King
Dasharatha took an oath for his Queen
Kaikeyi (on her maid,
Manthara's insistence) and thus had to exile his favorite son, Lord
Rama
Rama (; , , ) is a major deity in Hinduism. He is worshipped as the seventh and one of the most popular avatars of Vishnu. In Rama-centric Hindu traditions, he is considered the Supreme Being. Also considered as the ideal man (''maryāda' ...
along with his wife Devi
Sita
Sita (; ), also known as Siya, Jānaki and Maithili, is a Hindu goddess and the female protagonist of the Hindu epic ''Ramayana''. Sita is the consort of Rama, the avatar of god Vishnu, and is regarded as an avatar of goddess Lakshmi. She is t ...
and brother
Lakshmana for fourteen years in the forest.
In the Mahabharata,
Devrata took an oath of
celibacy
Celibacy (from Latin ''caelibatus'') is the state of voluntarily being unmarried, sexually abstinent, or both. It is often in association with the role of a religious official or devotee. In its narrow sense, the term ''celibacy'' is applied ...
so that
Satyavati
Satyavati (, ; also spelled Satyawati) was the queen of the Kuru Kingdom in the Hindu epic ''Mahabharata''. Satyavati is married to king Shantanu of Hastinapura, and is a great-grandmother of the Pandava and Kaurava princes. She is also the m ...
's father would marry her to Devrata's father, King
Shantanu. He also took an oath to not rule the
kingdom and remain loyal to the king, who would be a descendant of Satyavati. Thus, Devavrata got the name ''Bhishma'', which means someone who has taken a terrible oath. Many others also took oaths that they fulfilled.
Greek tradition
Walter Burkert
Walter Burkert (; 2 February 1931 – 11 March 2015) was a German scholar of Greek mythology and cult.
A professor of classics at the University of Zurich, Switzerland, he taught in the UK and the US. He has influenced generations of student ...
has shown that since
Lycurgus of Athens (d. 324 BCE), who held that "it is the oath which holds democracy together", religion, morality and political organization had been linked by the oath, and the oath and its prerequisite altar had become the basis of both civil and criminal, as well as international law.
In traditional Greek folk songs, such as The Dead Brother's Song, the significance of the oath is highlighted. The power of an oath is such that it transcends death, as the deceased brother arises from the grave to fulfill his oath to his mother.
Christian tradition
Various Christian denominations have objected to the taking of oaths, most notably the
Religious Society of Friends
Quakers are people who belong to the Religious Society of Friends, a historically Protestant Christian set of denominations. Members refer to each other as Friends after in the Bible, and originally, others referred to them as Quakers ...
(Quakers) and
Anabaptist
Anabaptism (from Neo-Latin , from the Greek language, Greek : 're-' and 'baptism'; , earlier also )Since the middle of the 20th century, the German-speaking world no longer uses the term (translation: "Re-baptizers"), considering it biased. ...
groups, like
Mennonite
Mennonites are a group of Anabaptism, Anabaptist Christianity, Christian communities tracing their roots to the epoch of the Radical Reformation. The name ''Mennonites'' is derived from the cleric Menno Simons (1496–1561) of Friesland, part of ...
s,
Amish
The Amish (, also or ; ; ), formally the Old Order Amish, are a group of traditionalist Anabaptism, Anabaptist Christianity, Christian Christian denomination, church fellowships with Swiss people, Swiss and Alsace, Alsatian origins. As they ...
,
Hutterites and
Schwarzenau Brethren. This is principally based on Matthew 5:34–37, the
Antithesis of the Law. Here, Christ is reported as having said: "I say to you: '
Swear not at all
Matthew 5:34 is the thirty-fourth verse of Matthew 5, the fifth chapter of the Gospel of Matthew in the New Testament and is part of the Sermon on the Mount. This verse is part of either the third or fourth Matthew 5#Antitheses, antithesis, the d ...
.
James the Just stated in 5:12 "Above all, my brothers, do not swear—not by heaven or by earth or by anything else. Let your 'Yes' be yes, and your 'No', no, or you will be condemned." Beyond this scriptural authority, Quakers place importance on being truthful at all times, so the testimony opposing oaths springs from a view that "taking legal oaths implies a double standard of truthfulness"
[''Faith and Practice'', Baltimore Yearly Meeting of the Religious Society of Friends (1988) p. 19.] suggesting that truthfulness in legal contexts is somehow more important than truthfulness in non-legal contexts and that truthfulness in those other contexts is therefore somehow less important.
Not all
Christians
A Christian () is a person who follows or adheres to Christianity, a monotheistic Abrahamic religion based on the life and teachings of Jesus Christ. Christians form the largest religious community in the world. The words '' Christ'' and ''C ...
interpret this reading as forbidding all types of oaths, however. Opposition to oath-taking among some groups of Christian caused many problems for these groups throughout their history.
Quaker
Quakers are people who belong to the Religious Society of Friends, a historically Protestant Christian set of denominations. Members refer to each other as Friends after in the Bible, and originally, others referred to them as Quakers ...
s were frequently imprisoned because of their refusal to swear
loyalty oath
Loyalty is a Fixation (psychology), devotion to a country, philosophy, group, or person. Philosophers disagree on what can be an object of loyalty, as some argue that loyalty is strictly interpersonal and only another human being can be the obj ...
s. Testifying in court was also difficult;
George Fox
George Fox (July 1624 Old Style and New Style dates, O.S. – 13 January 1691 Old Style and New Style dates, O.S.) was an English Dissenters, English Dissenter, who was a founder of the Quakers, Religious Society of Friends, commonly known as t ...
, Quakers' founder, famously challenged a judge who had asked him to swear, saying that he would do so once the judge could point to any
Bible
The Bible is a collection of religious texts that are central to Christianity and Judaism, and esteemed in other Abrahamic religions such as Islam. The Bible is an anthology (a compilation of texts of a variety of forms) originally writt ...
passage where Jesus or his apostles took oaths — the judge could not, but this did not allow Fox to escape punishment. Legal reforms from the 18th century onwards mean that everyone in the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
now has the right to make a solemn
affirmation instead of an oath. The
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
has permitted affirmations since it was founded; it is explicitly mentioned in the
Constitution
A constitution is the aggregate of fundamental principles or established precedents that constitute the legal basis of a polity, organization or other type of entity, and commonly determines how that entity is to be governed.
When these pri ...
. Only President
Franklin Pierce
Franklin Pierce (November 23, 1804October 8, 1869) was the 14th president of the United States, serving from 1853 to 1857. A northern Democratic Party (United States), Democrat who believed that the Abolitionism in the United States, abolitio ...
has chosen to affirm rather than swear at his inauguration.
As late as 1880,
Charles Bradlaugh was denied a seat as an MP in the
Parliament of the United Kingdom
The Parliament of the United Kingdom of Great Britain and Northern Ireland is the supreme legislative body of the United Kingdom, and may also legislate for the Crown Dependencies and the British Overseas Territories. It meets at the Palace ...
because of his professed
atheism
Atheism, in the broadest sense, is an absence of belief in the Existence of God, existence of Deity, deities. Less broadly, atheism is a rejection of the belief that any deities exist. In an even narrower sense, atheism is specifically the ...
as he was judged unable to swear the
Oath of Allegiance in spite of his proposal to swear the oath as a "matter of form".
Islamic tradition
Islam takes the fulfillment of oaths extremely seriously, as directed by the Qur'an:
Germanic tradition
Germanic warrior culture was significantly based on oaths of fealty.
A prose passage inserted in the eddic poem ''
Helgakviða Hjörvarðssonar'' relates: Hedin was coming home alone from the forest one
Yule
Yule is a winter festival historically observed by the Germanic peoples that was incorporated into Christmas during the Christianisation of the Germanic peoples. In present times adherents of some new religious movements (such as Modern ...
-eve, and found a
troll-woman; she rode on a wolf, and had snakes in place of a bridle. She asked Hedin for his company. "Nay," said he. She said, "Thou shalt pay for this at the ''bragarfull''." That evening the great vows were taken; the
sacred boar was brought in, the men laid their hands thereon, and took their vows at the ''bragarfull''. Hedin vowed that he would have Sváva, Eylimi's daughter, the beloved of his brother Helgi; then such great grief seized him that he went forth on wild paths southward over the land, and found Helgi, his brother.
Such Norse traditions are directly parallel to the "bird oaths" of late medieval France, such as the
voeux du faisan (oath on the pheasant) or the (fictional)
voeux du paon (oath on the peacock). Huizinga, ''
The Autumn of the Middle Ages'' (ch. 3); Michel Margue, "Vogelgelübde" am Hof des Fürsten. Ritterliches Integrationsritual zwischen Traditions- und Gegenwartsbezug (14. – 15. Jahrhundert)
Modern law

In the modern law, oaths are made by a witness to a court of law before giving testimony and usually by a newly appointed government officer to the people of a state before taking office. However, in both of those cases, an
affirmation can usually be replaced with a written statement, only if the author swears the statement is true. This statement is called an ''
affidavit
An ( ; Medieval Latin for "he has declared under oath") is a written statement voluntarily made by an ''affiant'' or ''deposition (law), deponent'' under an oath or affirmation which is administered by a person who is authorized to do so by la ...
''. This is in contrast to a
statutory declaration, where no sworn oath or affirmation is involved. The oath given to support an affidavit is frequently administered by a
notary
A notary is a person authorised to perform acts in legal affairs, in particular witnessing signatures on documents. The form that the notarial profession takes varies with local legal systems.
A notary, while a legal professional, is distin ...
, who will certify the giving of the oath by affixing her or his seal to the document. Willfully delivering a false oath (or affirmation) is the crime of
perjury
Perjury (also known as forswearing) is the intentional act of swearing a false oath or falsifying an affirmation to tell the truth, whether spoken or in writing, concerning matters material to an official proceeding."Perjury The act or an insta ...
.
There are some places where there is a confusion between the "oath" and other statements or promises. For example, the current
Olympic Oath is really a
pledge, not properly an oath, since there is only a promise but there is no appeal to a sacred witness. Oaths may also be confused with
vow
A vow ( Lat. ''votum'', vow, promise; see vote) is a promise or oath. A vow is used as a promise that is solemn rather than casual.
Marriage vows
Marriage vows are binding promises each partner in a couple makes to the other during a weddin ...
s, but vows are really just a particular kind of an oath.
Hand gestures

Instead of, or in addition to, holding one's hand upon an object of ceremonial importance, it can be customary for a person swearing an oath to hold a raised hand in a specific gesture. Most often the right hand is raised. This custom has been explained with reference to medieval practices of branding palms.
Schwurhand
Serbian custom
International customs
The
Scout Sign can be made while giving the
Scout Promise. In ''
Scouting for Boys'' the movement's founder,
Robert Baden-Powell, instructed: "While taking this oath the scout will stand, holding his right hand raised level with his shoulder, palm to the front, thumb resting on the nail of the digitus minimus (little finger) and the other three fingers upright, pointing upwards."
Types of oaths
*
Hippocratic Oath, an oath historically taken by physicians and other healthcare professionals swearing to practice medicine honestly.
**
Veterinarian's Oath, an oath taken by
veterinarian
A veterinarian (vet) or veterinary surgeon is a medical professional who practices veterinary medicine. They manage a wide range of health conditions and injuries in non-human animals. Along with this, veterinarians also play a role in animal r ...
s as practitioners of
veterinary medicine
Veterinary medicine is the branch of medicine that deals with the prevention, management, medical diagnosis, diagnosis, and treatment of disease, disorder, and injury in non-human animals. The scope of veterinary medicine is wide, covering all a ...
in a manner similar to the Hippocratic Oath.
*
Oath of allegiance, an oath whereby a subject or citizen acknowledges a duty of allegiance and swears loyalty to monarch or country.
*
Oath of citizenship, an oath taken by immigrants that officially naturalizes immigrants into citizens.
*
Oath of office, an oath or affirmation a person takes before undertaking the duties of an office.
**
Juror's oath
A juror's oath is used to swear in jurors at the beginning of jury selection or trial.
Australia
In a New South Wales juror's oath, the juror promises to "...well and truly try and true deliverance make between our Sovereign Lady the Queen , an oath taken by jurors at the beginning of jury selection or trial
* Pauper's oath">r the ...
, an oath taken by jurors at the beginning of jury selection or trial
* Pauper's oath, a sworn statement or oath by a person that he or she is completely without any money or property.
* Military oath, delivered on enlistment into the military service of the state military.
* Decisory oath, an oath that conclusively resolves a factual dispute
, promoted by Radical Republicans and opposed by President Abraham Lincoln during the American Civil War.
*
or Jewish Oath, rooted in antisemitism and accompanied by certain ceremonies.
*
, in the fiction of J. R. R. Tolkien.
*
, a fictional event in the 14th century Chinese historical novel ''Romance of the Three Kingdoms'' by Luo Guanzhong.
* The
'', a court case in a state of the United States about taking oaths by different scriptures. The results have reversed several times.
*
'' covers oaths as well as many other topics. (In review as of 12/2/2006 but th
London, UK: Archibald Constable & Co. Ltd. (Source:
. Accessed: March 16, 2011)
BBC Radio 4 discussion with Alan Sommerstein, Paul Cartledge & Mary Beard (''In Our Time'', Jan. 5, 2006)
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