Acts 7:6-8

6But 1God spoke to this effect, that his descendants would be strangers in a land that was not theirs, and 2they would enslave and mistreat them for four hundred years. 7‘And whatever nation to which they are enslaved I Myself will judge,’ said God, ‘and 3after that they will come out and 4serve Me in this place.’ 8And He 5gave him 6the covenant of circumcision; and so 7Abraham fathered Isaac, and circumcised him on the eighth day; and 8Isaac fathered Jacob, and 9Jacob, the twelve 10patriarchs.