'Oath' in the Bible
Then the priest shall have her take an oath and say to the woman, “If no man has lain with you and if you have not gone astray into uncleanness [while married], then be immune to this water of bitterness that brings a curse;
(then the priest shall have the woman swear the oath of the curse, and say to the woman), “The Lord make you a curse and an oath among your people when the Lord makes your thigh waste away and your abdomen swell;
If a man makes a vow to the Lord or swears an oath to bind himself with a pledge [of abstinence], he shall not break (violate, profane) his word; he shall do according to all that proceeds out of his mouth.
However, if she vowed in her husband’s house or bound herself by a pledge with an oath,
“Every vow and every binding oath to humble herself, her husband may confirm it or her husband may annul it.