Oath in the context of Old English

An oath of allegiance is an oath whereby a subject or citizen acknowledges a duty of allegiance and swears loyalty to a monarch or a country. In modern republics, oaths are sworn to the country in general, or to the country's constitution. For example, officials in the United States, take an oath of office that includes swearing allegiance to the United States Constitution. However, typically in a constitutional monarchy, such as in the United Kingdom, Australia, and other Commonwealth realms, oaths are sworn to the monarch. Armed forces typically require a military oath.

In feudal times, a person would also swear allegiance to their feudal superiors. To this day the oath sworn by freemen of the City of London contains an oath of obedience to the Lord Mayor of the City of London.

The Hippocratic Oath is an oath of ethics historically taken by physicians. It is one of the most widely known of Greek medical texts. In its original form, it requires a new physician to swear, by a number of healing gods, to uphold specific ethical standards. The oath is the earliest expression of medical ethics in the Western world, establishing several principles of medical ethics which remain of paramount significance today. These include the principles of medical confidentiality and non-maleficence. As the foundational expression of certain principles that continue to guide and inform medical practice, the ancient text is of more than historic and symbolic value. It is enshrined in the legal statutes of various jurisdictions, such that violations of the oath may carry criminal or other liability beyond the oath's symbolic nature.

The Shahada (Arabic: الشَّهَادَةُ aš-šahādatu; Arabic pronunciation: [aʃʃahaːdatʊ], 'the testimony'), also transliterated as Shahadah, is an Islamic oath and creed, and one of the Five Pillars of Islam and part of the Adhan. It reads: "I bear witness that there is no god but God, and I bear witness that Muhammad is the Messenger of God."The Shahada declares belief in the oneness (tawhid) of God and the acceptance of Muhammad as God's messenger. Some Shia Muslims also include a statement of belief in the wilayat of Ali, but they do not consider it as an obligatory part for converting to Islam. A single honest recitation of the Shahada is all that is required for a person to become a Muslim according to most traditional schools.

A military oath, also known as the oath of enlistment or swearing-in is an oath delivered by a conscript or volunteer upon enlisting into the state's armed forces. Various states have different phrasings of the oath, with the common component being the fidelity to the state and obedience to the superior officers. In the ancient times it was a very solemn procedure. In modern times, with many formal laws and regulations to maintain army discipline, it is still a solemn, but rather a formal event.

An oath of office is an oath or affirmation a person takes before assuming the duties of an office, usually a position in government or within a religious body, although such oaths are sometimes required of officers of other organizations. Such oaths are often required by the laws of the state, religious body, or other organization before the person may actually exercise the powers of the office or organization. It may be administered at an inauguration, coronation, enthronement, or other ceremony connected with the taking up of office itself, or it may be administered privately. In some cases it may be administered privately and then repeated during a public ceremony.

Some oaths of office are statements of allegiance and loyalty to a constitution or other legal text or to a person or office-holder (e.g., an oath to support the constitution of the state, or of loyalty to the king or queen) (see Oath of allegiance). Under the laws of a state, it may be considered treason or a high crime to betray a sworn oath of office. In many cases, the oath is performed using an oath book, typically religious scripture such as the Bible.

In law, a witness is someone who, either voluntarily or under compulsion, provides testimonial evidence, either oral or written, of what they know or claim to know.

A witness might be compelled to provide testimony in court, before a grand jury, before an administrative tribunal, before a deposition officer, or in a variety of other legal proceedings. A subpoena is a legal document that commands a person to appear at a proceeding. It is used to compel the testimony of a witness in a trial. Usually, it can be issued by a judge or by the lawyer representing the plaintiff or the defendant in a civil trial or by the prosecutor or the defense attorney in a criminal proceeding, or by a government agency. In many jurisdictions, it is compulsory to comply with the subpoena and either take an oath or solemnly affirm to testify truthfully under penalty of perjury.

An affidavit (/ˌæfɪˈdeɪvɪt/ AF-ih-DAY-vit; Medieval Latin for "he has declared under oath") is a written statement voluntarily made by an affiant or deponent under an oath or affirmation which is administered by a person who is authorized to do so by law. Such a statement is witnessed as to the authenticity of the affiant's signature by a taker of oaths, such as a notary public or commissioner of oaths. An affidavit is a type of verified statement or showing, or containing a verification, meaning it is made under oath on penalty of perjury. It serves as evidence for its veracity and is required in court proceedings.

An oath of fealty, from the Latin fidelitas (faithfulness), is a pledge of allegiance of one person to another.

Abjuration is the solemn repudiation, abandonment, or renunciation by or upon oath, often the renunciation of citizenship or some other right or privilege. The term comes from the Latin abjurare, "to forswear".

Albanian paganism comprises the pagan customs, beliefs, rituals, myths and legends of the Albanian people. The elements of Albanian mythology are of ancient Paleo-Balkanic origin and almost all of them are pagan. Ancient paganism persisted among Albanians, and especially within the inaccessible and deep interior – where Albanian folklore evolved over the centuries in a relatively isolated tribal culture and society – it has continued to persist, or at most it was partially transformed by the Christian, Muslim and Marxist beliefs that were either to be introduced by choice or imposed by force. The Albanian traditional customary law (Kanun) has held a sacred – although secular – longstanding, unwavering and unchallenged authority with a cross-religious effectiveness over the Albanians, which is attributed to an earlier pagan code common to all the Albanian tribes. Indeed, the Kanun contains several customary concepts that clearly have their origins in pagan beliefs, including in particular the ancestor worship, animism and totemism, which have been preserved since pre-Christian times. Albanian traditions have been orally transmitted – through memory systems that have survived intact into modern times – down the generations and are still very much alive in the mountainous regions of Albania, Kosovo, Montenegro and western North Macedonia, as well as among the Arbëreshë in Italy, the Arvanites in Greece and the Arbanasi in Croatia.

The old beliefs in sun and moon, light and darkness, sky and earth, fire and hearth, water and springs, death and rebirth, birds and serpents, mountains, stones and caves, sacrifice, and fate are some of the pagan beliefs among Albanians. The Fire (Zjarri) rituals and the Sun (Dielli) and Moon (Hëna) worship are the earliest attested cults of the Albanians. The Sun holds the primary role in Albanian pagan customs, beliefs, rituals, myths, and legends; Albanian major traditional festivities and calendar rites are based on the Sun, worshiped as the god of light, sky and weather, giver of life, health and energy, and all-seeing eye; the sunrise is honored as it is believed to give energy and health to the body. The Moon is worshiped as a goddess, with her cyclical phases regulating many aspects of Albanian life, defining agricultural and livestock activities, various crafts, and human body. The morning and evening star Venus is personified with Prende, associated with dawn, beauty, love, fertility, health, and the protection of women. The cult of the Earth (Dheu) and that of the Sky (Qielli) have a special place. The Fire – Zjarri, evidently also called with the theonym Enji – is deified in Albanian tradition as releaser of light and heat with the power to ward off darkness and evil, affect cosmic phenomena and give strength to the Sun, and as sustainer of the continuity between life and afterlife and between the generations, ensuring the survival of the lineage (fis or farë). To spit into Fire is taboo. The divine power of Fire is used for the hearth and the rituals, including calendar fires, sacrificial offerings, divination, purification, and protection from big storms and other potentially harmful events. Fire worship and rituals are associated with the cult of the Sun, the cult of the hearth (vatër) and the ancestor, and the cult of fertility in agriculture and animal husbandry. Ritual calendar fires are associated with the cosmic cycle and the rhythms of agricultural and pastoral life. Besa is a common practice in Albanian culture, consisting of an oath (be) solemnly taken by sun, by moon, by sky, by earth, by fire, by stone and thunderstone, by mountain, by water, and by snake, which are all considered sacred objects. Associated with human life, bees are highly revered by Albanians. The eagle is the animal totem of all Albanians, associated with the Sky, freedom and heroism. A widespread folk symbol is the serpent (Gjarpër, Vitore, etc.), a totem of the Albanians associated with earth, water, sun, hearth and ancestor cults, as well as destiny, good fortune and fertility. The sun, the moon, the star, the eagle (bird), the serpent, and the bee, often appear in Albanian legends and folk art.

The Rütli Oath (German: Rütlischwur, Swiss Standard German pronunciation: [ˈryːtliˌʃvuːr]) is the legendary oath taken at the foundation of the Old Swiss Confederacy (traditionally dated to 1307) by the representatives of the three founding cantons, Uri, Schwyz and Unterwalden.It is named after the site of the oath taking, the Rütli, a meadow above Lake Uri near Seelisberg. Recorded in Swiss historiography from the 15th century, the oath is notably featured in the 19th century play William Tell (Wilhelm Tell) by Friedrich Schiller.

In law, an affirmation is a solemn declaration allowed to those who conscientiously object to taking an oath. An affirmation has exactly the same legal effect as an oath but is usually taken to avoid the religious implications of an oath; it is thus legally binding but not considered a religious oath. Some religious adherents hold beliefs that allow them to make legally binding promises but forbid them to swear an oath before a deity. Additionally, an individual may decline to take a religious oath due to their personal beliefs or those of their audience. In some jurisdictions, an affirmation may be given only if a reason is provided.

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.

The oath of office of the president of the United States is the oath or affirmation that the president of the United States takes upon assuming office. The wording of the oath is specified in Article II, Section One, Clause 8, of the United States Constitution, and a new president is required to take it before exercising or carrying out any official powers or duties.

This clause is one of three oath or affirmation clauses in the Constitution, but it is the only one that actually specifies the words that must be spoken. Article I, Section 3 requires Senators, when sitting to try impeachments, to be "on Oath or Affirmation." Article VI, Clause 3, similarly requires the persons specified therein to "be bound by oath or affirmation, to support this Constitution." The presidential oath requires much more than that general oath of allegiance and fidelity. This clause enjoins the new president to swear or affirm: "I will to the best of my ability, preserve, protect and defend the Constitution of the United States."

An oath book (also spelled oathbook or oath-book) is a book upon which an oath is sworn, typically in oaths of office and in courts of law to provide sworn testimony. Rooted in Germanic pagan and Jewish custom, the practice of swearing upon books is performed across various religions and countries. Christians generally swear upon the Bible (or historically a Gospel book), Jews by the Torah, Muslims by the Quran, and Hindus by the Bhagavad Gita, although some religious opposition to the practice exists, particularly among Quakers.

In Greek mythology, Horkos (/ˈhɔːrkɒs/; Ancient Greek: Ὅρκος [hór.kos], lit. 'Oath') personifies the curse that is inflicted on any person who swears a false oath. According to Hesiod, Horkos was the son of Eris (Strife). He is one of the divine enforcers of oaths, which were an important part of the ancient Greek system of justice.