Genesis 17:4

17:4 “As for me, this is my covenant with you: You will be the father of a multitude of nations.

Genesis 17:7

17:7 I will confirm my covenant as a perpetual covenant between me and you. It will extend to your descendants after you throughout their generations. I will be your God and the God of your descendants after you.

Genesis 17:21

17:21 But I will establish my covenant with Isaac, whom Sarah will bear to you at this set time next year.”