Deuteronomy 23:20-21

20 aYou may charge a foreigner interest, but you may not charge your brother interest, bthat the Lord your God may bless you in all that you undertake in the land that you are entering to take possession of it.

21 c“If you make a vow to the Lord your God, you shall not delay fulfilling it, for the Lord your God will surely require it of you, and you will be guilty of sin.
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