Acts 7:5-8

5And he did not give him an inheritance in it, not even what his foot could stand on; and promised to give it to him for a possession, and to his seed after him, when he had no child.

6And 1God spoke thus: His seed shall be a sojourner in a strange land, and they shall enslave them and evil entreat [them] four hundred years;

7and the nation to which they shall be in bondage will I judge, said 2God; and after these things they shall come forth and serve me in this place.

8And he gave to him [the] covenant of circumcision; and thus he begat Isaac and circumcised him the eighth day; and Isaac Jacob, and Jacob the twelve patriarchs.