Deuteronomy 23:19-20 - Interest On Loans
19 Thou shalt not lend on interest to thy brother, interest of silver, interest of food, - interest of any thing that can be lent on interest: 20 to a foreigner, thou mayest lend on interest, but to thy brother, shalt thou not lend on interest, - that Yahweh thy God may bless thee, in everything where-unto thou puttest thy hand, upon the land which thou art entering to possess.