Genesis 20:17-21:3

New Revised Standard Version Catholic Edition

¹⁷ Then Abraham prayed to God; and God healed Abimelech, and also healed his wife and female slaves so that they bore children. ¹⁸ For the Lord had closed fast all the wombs of the house of Abimelech because of Sarah, Abraham’s wife.

The Birth of Isaac

21 The Lord dealt with Sarah as he had said, and the Lord did for Sarah as he had promised. ² Sarah conceived and bore Abraham a son in his old age, at the time of which God had spoken to him. ³ Abraham gave the name Isaac to his son whom Sarah bore him.