Deuteronomy 23:21-23

International Standard Version

²¹ “When you make a vow to the Lord your God, don’t delay paying it, because the Lord your God will certainly demand payment from you, and then you will be guilty of sin. ²² But if you refrain from making a vow, then you won’t be guilty. ²³ Be sure you do whatever you promise, because you have given your word voluntarily to the Lord your God.