Genesis 17:16

17:16 I will bless her and will give you a son through her. I will bless her and she will become a mother of nations. Kings of countries will come from her!”

Genesis 21:12

21:12 But God said to Abraham, “Do not be upset about the boy or your slave wife. Do all that Sarah is telling you because through Isaac your descendants will be counted.

Genesis 31:37

31:37 When you searched through all my goods, did you find anything that belonged to you? Set it here before my relatives and yours, and let them settle the dispute between the two of us!