Genesis 17:9

17:9 Then God said to Abraham, “As for you, you must keep the covenantal requirement I am imposing on you and your descendants after you throughout their generations.

Genesis 21:2

21:2 So Sarah became pregnant and bore Abraham a son in his old age at the appointed time that God had told him.

Genesis 21:22

21:22 At that time Abimelech and Phicol, the commander of his army, said to Abraham, “God is with you in all that you do.