'Vow' in the Bible

then it shall come about that the place in which the Lord your God will choose for His name to dwell, there you shall bring all that I command you: your burnt offerings and your sacrifices, your tithes and the contribution of your hand, and all your choice votive offerings which you will vow to the Lord.

You are not allowed to eat within your gates the tithe of your grain or new wine or oil, or the firstborn of your herd or flock, or any of your votive offerings which you vow, or your freewill offerings, or the contribution of your hand.

“When you make a vow to the Lord your God, you shall not delay to pay it, for it would be sin in you, and the Lord your God will surely require it of you.