'Vow' in the Bible

"'But if the sacrifice of his offering is a vow, or a freewill offering, it shall be eaten on the day that he offers his sacrifice; and on the next day what remains of it shall be eaten:

Whoever offers a sacrifice of peace offerings to Yahweh to accomplish a vow, or for a freewill offering, of the herd or of the flock, it shall be perfect to be accepted; no blemish shall be therein.

Either a bull or a lamb that has any deformity or lacking in his parts, that you may offer for a freewill offering; but for a vow it shall not be accepted.

"Speak to the children of Israel, and say to them, 'When a man makes a vow, the persons shall be for Yahweh by your valuation.