Deuteronomy 23:20-22

New Living Translation

²⁰ You may charge interest to foreigners, but you may not charge interest to Israelites, so that the Lord your God may bless you in everything you do in the land you are about to enter and occupy.

²¹ “When you make a vow to the Lord your God, be prompt in fulfilling whatever you promised him. For the Lord your God demands that you promptly fulfill all your vows, or you will be guilty of sin. ²² However, it is not a sin to refrain from making a vow.