Exodus 22:22-23

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,

Exodus 1:12

1:12 But the more the Egyptians oppressed them, the more they multiplied and spread. As a result the Egyptians loathed the Israelites,

Exodus 1:11

1:11 So they put foremen over the Israelites to oppress them with hard labor. As a result they built Pithom and Rameses as store cities for Pharaoh.

Exodus 10:3

10:3 So Moses and Aaron came to Pharaoh and told him, “Thus says the Lord, the God of the Hebrews: ‘How long do you refuse to humble yourself before me? Release my people so that they may serve me!