Deuteronomy 23:21-23

Evangelical Heritage Version

²¹ When you make a vow to the Lord your God, do not delay fulfilling it, because the Lord your God will require it of you and you will be guilty. ²² But if you do not make a vow at all, you will not be guilty. ²³ Whatever has passed from your lips you must be careful to do, because with your own mouth you vowed to make an offering to the Lord your God with your mouth.