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.”

Genesis 17:2

17:2 Then I will confirm my covenant between me and you, and I will give you a multitude of descendants.”

Genesis 4:16

4:16 So Cain went out from the presence of the Lord and lived in the land of Nod, east of Eden.