Genesis 21:1-7

1And Jehovah visited Sarah as he had said, and Jehovah did to Sarah as he had spoken.

2And Sarah conceived, and bore Abraham a son in his old age, at the appointed time of which 1God had spoken to him.

3And Abraham called the name of his son who was born to him, whom Sarah bore to him, Isaac.

4And Abraham circumcised his son Isaac, being eight days old, as 2God had commanded him.

5And Abraham was a hundred years old when his son Isaac was born to him.

6And Sarah said, 3God has made me laugh: all that hear will laugh with me.

7And she said, Who would have said to Abraham, Sarah will suckle children? For I have borne [him] a son in his old age.