Isaac’s birth

21 The Lord was attentive to Sarah just as he had said, and the Lord carried out just what he had promised her. ² She became pregnant and gave birth to a son for Abraham when he was old, at the very time God had told him.

²¹ Isaac prayed to the Lord for his wife, since she was unable to have children. The Lord was moved by his prayer, and his wife Rebekah became pregnant.

²² Then God remembered Rachel, responded to her, and let her conceive.

³ The Lord’s messenger appeared to the woman and said to her, “Even though you’ve been unable to become pregnant and haven’t given birth, you are now pregnant and will give birth to a son!