Written by attorneys · grounded in primary & secondary sources — see below
A solemn declaration or promise made with an appeal to a higher power or under penalty of perjury that binds the declarant to speak truthfully or perform a duty faithfully. It serves as a formal mechanism to impress the duty of truthfulness on the conscience of the declarant in judicial, administrative, or constitutional contexts. The declaration may take the form of an oath invoking divine sanction or an equivalent affirmation for those who decline religious references.
Sources & Authorities
How it applies
Common Examples
6
Warrant Application Review
Sydney Santos submitted an affidavit to a magistrate detailing observations of illegal activity at a warehouse. The magistrate reviewed the sworn statements before issuing a search warrant for the premises. Because the statements were made under oath, they satisfied the probable cause requirement and authorized the seizure of specified documents.
Corporate Interrogatory Response
Synergy Systems received interrogatories in a contract dispute and designated an officer to prepare answers. The officer reviewed company records and provided separate written responses signed under oath within the required period. The sworn answers allowed the opposing party to rely on them as binding admissions during summary judgment briefing.
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Cases
Statutes
Federal Rules
Uniform Acts
Model Codes
Common Law
Dictionaries
Witness Testimony Preparation
Spencer Silver was called to testify about events he observed at a construction site. Before taking the stand the court required him to declare under oath that he would tell the truth. The oath impressed the duty of honesty on his conscience and permitted the jury to assess his credibility during direct and cross examination.
Divorce Petition Filing
Sabrina Shah and her spouse filed a joint petition stating under oath that their marriage was irretrievably broken. The court conducted a hearing and accepted the sworn statements as evidence that no reconciliation was possible. The finding allowed the court to dissolve the marriage without further contested proceedings.
Bar Admission Oath
Simone Sanders applied for admission to the state bar and executed an oath promising to support the federal and state constitutions. The reviewing committee accepted the generic commitment as sufficient because it did not chill protected expression or impose vague obligations. The oath cleared the final step for her licensure.
Presidential Inauguration
Stephen Shaw took the presidential oath of office before the assembled Congress and public. The oath bound him to faithfully execute the duties of the presidency for the four-year term. The ceremony satisfied the constitutional requirement and vested executive power in the new officeholder.
Common questions
Frequently Asked
3
When must interrogatory answers be provided under oath?+
Each interrogatory that is not properly objected to must be answered separately and fully in writing under oath by the party or an authorized officer or agent. An unsworn narrative or attorney-drafted response fails to satisfy the requirement and may be compelled by the court.
Supporting sources
What form must a witness affirmation take?+
The affirmation must be in a form designed to impress the duty to testify truthfully on the witness's conscience. Courts accept unconventional wording provided the witness confirms that the chosen language achieves that purpose.
Supporting sources
How does an oath support a finding that a marriage is irretrievably broken?+
When both parties state under oath or affirmation that the marriage is irretrievably broken, or one party so states and the other does not deny it, the court must make a finding after hearing. The sworn statements provide the evidentiary basis for dissolution.
Supporting sources
5 U.S. (1 Cranch) 137 (1803)Property
…and laws of the United States. If judges were to be used to give effect to legislative acts repugnant to the Constitution the oath they take would be mockery. The particular phraseology of the Constitution confirms the principle that a law repugnant to the Constitution is void and that courts as well as other…