'Obligation' in the Bible

When a man makes a vow to the Lord or swears an oath to put himself under an obligation, he must not break his word; he must do whatever he has promised.

“When a woman in her father’s house during her youth makes a vow to the Lord or puts herself under an obligation,

and her father hears about her vow or the obligation she put herself under, and he says nothing to her, all her vows and every obligation she put herself under are binding.

“If a woman in her husband’s house has made a vow or put herself under an obligation with an oath,

and her husband hears about it, says nothing to her, and does not prohibit her, all her vows are binding, and every obligation she put herself under is binding.

But if her husband cancels them on the day he hears about it, nothing that came from her lips, whether her vows or her obligation, is binding. Her husband has canceled them, and the Lord will absolve her.

Her husband may confirm or cancel any vow or any sworn obligation to deny herself.

and the land is subdued before the Lord—afterward you may return and be free from obligation to the Lord and to Israel. And this land will belong to you as a possession before the Lord.