The Birth of Isaac

21 The Lord kept his word and did for Sarah exactly what he had promised.

¹⁰ Then one of them said, “I will return to you about this time next year, and your wife, Sarah, will have a son!”

Sarah was listening to this conversation from the tent.

¹⁴ Is anything too hard for the Lord? I will return about this time next year, and Sarah will have a son.”

¹⁹ But God replied, “No—Sarah, your wife, will give birth to a son for you. You will name him Isaac,^[a] and I will confirm my covenant with him and his descendants as an everlasting covenant.

² This truth gives them confidence that they have eternal life, which God—who does not lie—promised them before the world began.

²³ The son of the slave wife was born in a human attempt to bring about the fulfillment of God’s promise. But the son of the freeborn wife was born as God’s own fulfillment of his promise.

³⁵ Heaven and earth will disappear, but my words will never disappear.

²⁸ And you, dear brothers and sisters, are children of the promise, just like Isaac.