³⁰ Sarai was unable to conceive;^(A) she did not have a child.

Sarah Laughs

⁹ “Where is your wife Sarah?” they asked him.

“There, in the tent,” he answered.

¹⁰ The Lord said, “I will certainly come back to you in about a year’s time, and your wife Sarah will have a son!” ^(A) Now Sarah was listening at the entrance of the tent behind him.

¹¹ Abraham and Sarah were old and getting on in years.^[a] Sarah had passed the age of childbearing.^{(B) 12} So she laughed to herself: “After I am worn out and my lord is old, will I have delight?” ^(C)

¹³ But the Lord asked Abraham, “Why did Sarah laugh, saying, ‘Can I really have a baby when I’m old?’ ¹⁴ Is anything impossible for the Lord?^(D) At the appointed time I will come back to you, and in about a year she will have a son.”

The Birth of Isaac

21 The Lord came to Sarah as he had said, and the Lord did for Sarah what he had promised.^{(A) 2} Sarah became pregnant and bore a son to Abraham in his old age, at the appointed time God had told him.^{(B) 3} Abraham named his son who was born to him—the one Sarah bore to him—Isaac.^{(C) 4} When his son Isaac was eight days old, Abraham circumcised him, as God had commanded him.^{(D) 5} Abraham was a hundred years old when his son Isaac was born to him.^(E)

⁶ Sarah said, “God has made me laugh, and everyone who hears will laugh with me.”^{[a](F) 7} She also said, “Who would have told Abraham that Sarah would nurse children? Yet I have borne a son for him^[b] in his old age.”