Genesis 15:13-16

GOD said to Abram, “Know this: your descendants will live as outsiders in a land not theirs; they’ll be enslaved and beaten down for 400 years. Then I’ll punish their slave masters; your offspring will march out of there loaded with plunder. But not you; you’ll have a long and full life and die a good and peaceful death. Not until the fourth generation will your descendants return here; sin is still a thriving business among the Amorites.”