21 And the Lord visited Sarah as he had said, and the Lord did unto Sarah as he had spoken.

² For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.

³ And Abraham called the name of his son that was born unto him, whom Sarah bare to him, Isaac.

¹¹ Through faith also Sara herself received strength to conceive seed, and was delivered of a child when she was past age, because she judged him faithful who had promised.