Acts 7:6-8

6But 1God spoke to this effect, that his descendants would be aliens in a foreign land, and that they would 2be enslaved and mistreated for four hundred years. 7‘And whatever nation to which they will be in bondage 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 became the father of Isaac, and circumcised him on the eighth day; and 8Isaac became the father of Jacob, and 9Jacob of the twelve 10patriarchs.