Genesis 21
1 Ref Yahweh visited Sarah as he had said, and Yahweh did to Sarah as he had spoken.
2 Ref Sarah conceived, and bore Abraham a son in his old age, at the set time of which God had spoken to him.
3 Ref Abraham called his son who was born to him, whom Sarah bare to him, Isaac.{Isaac means "He laughs."}
4 Ref Abraham circumcised his son, Isaac, when he was eight days old, as God had commanded him.