Genesis 17:15-17
15 Then God said to Abraham, “As for Sarai your wife, you shall not call her name Sarai, but (a)Sarah shall be her name.
16 I will bless her, and indeed I will give you (A)a son by her. Then I will bless her, and she shall be a mother of nations; (B)kings of peoples will (b)come from her.”
17 Then Abraham (C)fell on his face and laughed, and said in his heart, “Will a child be born to a man one hundred years old? And (D)will Sarah, who is ninety years old, bear a child?”