'Vow' in the Bible

"Speak to the {Israelites} and say to them, 'When a man or a woman takes a special vow, a vow of a {Nazirite}, to keep separate for Yahweh,

" 'All the days of the vow of his separation a razor will not pass over his head. Until fulfilling the days that he separated himself to Yahweh he will be holy and grow long the locks of the hair of his head.

He will rededicate to Yahweh the days of his separation and bring a ram-lamb {in its first year} as a guilt offering. The former days [of his vow] will fall away because his separation was defiled.

" 'This is the regulation of the Nazirite who has made a vow of his offering to Yahweh according to his separation, {in addition to what he can afford}. In accordance to the word of his vow that he vowed, he will do, concerning the instruction of his separation.'"

you will make an offering by fire for Yahweh from the cattle or from the flock, a burnt offering or a sacrifice to fulfill a vow, or as a freewill offering or at your feasts, to make a fragrance of appeasement for Yahweh.

When you prepare {a bull} as a burnt offering or a sacrifice to fulfill a vow or fellowship offering for Yahweh,

Israel made a vow to Yahweh, and they said, "If you will surely give this people into our hand, then we {will destroy} their cities."

if a man makes a vow for Yahweh or swears an oath with a binding pledge on himself, he must not render his word invalid; he must do all that went out from his mouth.

"If a woman makes a vow to Yahweh, and she binds a pledge [on herself] in her father's house in your childhood,

but if her father hears her vow or her pledge that she bound on herself and says nothing to her, then all her vows will stand, and every pledge that she binds on her life will stand.

But if on the day her husband hears [of it], he forbids her, then he will nullify her vow that she is under, and the rash promise of her lips that she bound on herself; and Yahweh will forgive her.

"But the vow of a widow or a woman who is divorced, all that she binds on herself will stand on her.

But if she made a vow [in] her husband's house, or bound herself on a pledge with a sworn oath,

"Any vow and any sworn oath of a pledge to inflict on herself, her husband can confirm it or her husband can nullify it.