Oath of office

An oath of office is a formal promise to perform the duties of a public or organizational position and uphold its governing obligations. It may be sworn religiously or made as a secular affirmation.

Oath: A solemn promise, often invoking a witness or sanction, that a person will act truthfully or fulfill specified obligations. An oath of office is a specialized oath tied to a position’s duties.
Presidential oath of office: The formal pledge a person takes when assuming the presidency of a country. Presidential versions make the office oath especially visible at a transfer of power.
Coronation oath: A monarch’s formal pledge, made at a coronation, to fulfill specified obligations of rule. Coronation oaths are an older model for binding rulers to duties.
Pledge: A formal promise or undertaking, often made publicly, without necessarily invoking a sacred witness. A pledge can express commitment without the legal or religious form of an oath.
Affirmation: A formal, nonreligious declaration made in place of a sworn oath. An affirmation lets officeholders make the same commitment without religious language.
Judicial oath: A formal promise by a judge to perform judicial duties impartially and lawfully. Judges swear or affirm obligations tied to impartial decision-making.
English Bill of Rights 1689: An English statute that limited royal power and established parliamentary rights after the Glorious Revolution. Its settlement reshaped allegiance and religious requirements for public office in England.
Contract: A legally enforceable agreement creating obligations between parties. An oath is a solemn commitment, but it is not automatically a contract.
Constitutional oath: An oath pledging fidelity to a constitution or constitutional order. Some offices define their core obligation as loyalty to a constitution.
Witness oath: A solemn promise by a witness to give truthful evidence in a legal proceeding. Witness oaths concern truth in testimony rather than duties attached to an office.

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