Exodus 22:20-25

20He that sacrificeth to any god, except to the LORD only, he shall be utterly destroyed. 21Thou shalt neither vex a stranger, nor oppress him: for ye were strangers in the land of Egypt. 22Ye shall not afflict any widow, or fatherless child. 23If thou shalt afflict them in any way, and they cry at all to me, I will surely hear their cry; 24And my wrath shall burn, and I will kill you with the sword; and your wives shall be widows, and your children fatherless.

25If thou shalt lend money to any of my people that is poor among you, thou shalt not be to him as a money-lender, neither shalt thou charge him interest.