Interest

Exodus 22:25 - If thou lend money to any of my people that is poor by thee, thou shalt not be to him as a usurer, neither shalt thou lay upon him usury.
Deuteronomy 23:19 - Thou shalt not lend upon usury to thy brother; usury of money, usury of victuals, usury of any thing that is lent upon usury:

Deuteronomy 23:20 - Unto a stranger thou mayest lend upon usury; but unto thy brother thou shalt not lend upon usury: that the LORD thy God may bless thee in all that thou settest thine hand to in the land whither thou goest to possess it.
Psalms 15:5 - He that putteth not out his money to usury, nor taketh reward against the innocent. He that doeth these things shall never be moved.
Proverbs 28:8 - He that by usury and unjust gain increaseth his substance, he shall gather it for him that will pity the poor.
Ezekiel 18:8 - He that hath not given forth upon usury, neither hath taken any increase, that hath withdrawn his hand from iniquity, hath executed true judgment between man and man,