¹⁹ Then God said, “Yes, but your wife Sarah will bear you a son,^(A) and you will call him Isaac.^[a](B) I will establish my covenant with him^(C) as an everlasting covenant^(D) for his descendants after him.

²¹ But my covenant^(A) I will establish with Isaac, whom Sarah will bear to you^(B) by this time next year.”^(C)

² Sarah became pregnant and bore a son^(A) to Abraham in his old age,^(B) at the very time God had promised him.^(C)

⁹ For this was how the promise was stated: “At the appointed time I will return, and Sarah will have a son.”^[a](A)