Exodus 22:21-24
22:21 “You must not wrong a foreigner nor oppress him, for you were foreigners in the land of Egypt.
22:22 “You must not afflict any widow or orphan.
22:23 If you afflict them in any way and they cry to me, I will surely hear their cry,
22:24 and my anger will burn and I will kill you with the sword, and your wives will be widows and your children will be fatherless.