¹⁵ God said to Abraham, “As for Sarai your wife, you shall not call her Sarai, but Sarah shall be her name. ¹⁶ I will bless her and also give you a son by her. I will bless her, and she shall give rise to nations; kings of peoples shall come from her.”^{(A) 17} Then Abraham fell on his face and laughed and said to himself, “Can a child be born to a man who is a hundred years old? Can Sarah, who is ninety years old, bear a child?”^(B)

⁹ They said to him, “Where is your wife Sarah?” And he said, “There, in the tent.” ¹⁰ Then one said, “I will surely return to you in due season, and your wife Sarah shall have a son.” And Sarah was listening at the tent entrance behind him.^{(A) 11} Now Abraham and Sarah were old, advanced in age; it had ceased to be with Sarah after the manner of women.^{(B) 12} So Sarah laughed to herself, saying, “After I have grown old, and my husband is old, shall I be fruitful?”^{(C) 13} The Lord said to Abraham, “Why did Sarah laugh and say, ‘Shall I indeed bear a child, now that I am old?’ ¹⁴ Is anything too wonderful for the Lord? At the set time I will return to you, in due season, and Sarah shall have a son.”^{(D) 15} But Sarah denied, saying, “I did not laugh,” for she was afraid. He said, “Yes, you did laugh.”

The Birth of Isaac

21 The Lord dealt with Sarah as he had said, and the Lord did for Sarah as he had promised.^{(A) 2} Sarah conceived and bore Abraham a son in his old age, at the time of which God had spoken to him.^{(B) 3} Abraham gave the name Isaac to his son whom Sarah bore him.^{(C) 4} And Abraham circumcised his son Isaac when he was eight days old, as God had commanded him.^{(D) 5} Abraham was a hundred years old when his son Isaac was born to him.^{(E) 6} Now Sarah said, “God has brought laughter for me; everyone who hears will laugh with me.”^{(F) 7} And she said, “Who would ever have said to Abraham that Sarah would nurse children? Yet I have borne him a son in his old age.”

Hagar and Ishmael Sent Away

⁸ The child grew and was weaned, and Abraham made a great feast on the day that Isaac was weaned.