'Pledge' in the Bible

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.

“Also if a woman makes a vow to the Lord and binds herself by a pledge [of abstinence], while living in her father’s house in her youth,

and her father hears her vow and her pledge by which she has bound herself, and he offers no objection, then all her vows shall stand and every pledge by which she has bound herself shall stand.

and her husband hears of it and says nothing about it on the day he hears it, then her vows shall stand and her pledge by which she bound herself shall stand.

But if her husband disapproves of her [making her vow or pledge] on the day that he hears of it, then he shall annul her vow which she is under and the rash statement of her lips by which she bound herself; and the Lord will forgive her.

However, if she vowed in her husband’s house or bound herself by a pledge with an oath,

and her husband heard it, but said nothing to her and did not disapprove of her [making the vow], then all her vows and every pledge by which she bound herself shall stand.

But if her husband absolutely annuls them on the day he heard them, then whatever proceeds from her lips concerning her vows or concerning her pledge shall not stand. Her husband has annulled them, and the Lord will forgive her.