Deuteronomy 23:21-23

International Children’s Bible

²¹ You might make a promise to give something to the Lord your God. Do not be slow to pay it. The Lord your God demands it from you. Do not be guilty of sin. ²² But if you do not make the promise, you will not be guilty. ²³ You must do whatever you say you will do. You chose to make the promise to the Lord your God.