Exodus 22:21-25

22:21 Thou shalt neither vex a stranger, nor oppress him: for ye were strangers in the land of Egypt. 22:22 Ye shall not afflict any widow, or fatherless child. 22:23 If thou afflict them in any wise, and they cry at all unto me, I will surely hear their cry; 22:24 And my wrath shall wax hot, and I will kill you with the sword; and your wives shall be widows, and your children fatherless. 22:25 If thou lend money to [any of] my people [that is] poor by thee, thou shalt not be to him as an usurer, neither shalt thou lay upon him usury.