'Vow to the Lord' in the Bible

So Israel made a vow to the Lord and said, “If You will indeed deliver this people into my hand, then I will utterly destroy their cities.”

If a man makes a vow to the Lord, or takes an oath to bind himself with a binding obligation, he shall not violate 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 an obligation in her father’s house in her youth,

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.

“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.

Jephthah made a vow to the Lord and said, “If You will indeed give the sons of Ammon into my hand,

Thus the Lord will make Himself known to Egypt, and the Egyptians will know the Lord in that day. They will even worship with sacrifice and offering, and will make a vow to the Lord and perform it.