Genesis 21:1-7

1The Lord visited Sarah just as he had said he would and did for Sarah what he had promised.

2So Sarah became pregnant and bore Abraham a son in his old age at the appointed time that God had told him.

3Abraham named his son – whom Sarah bore to him – Isaac.

4When his son Isaac was eight days old, Abraham circumcised him just as God had commanded him to do.

5(Now Abraham was a hundred years old when his son Isaac was born to him.)

6Sarah said, “God has made me laugh. Everyone who hears about this will laugh with me.”

7She went on to say, “Who would have said to Abraham that Sarah would nurse children? Yet I have given birth to a son for him in his old age!”