21 ¹ Yahweh visited Sarah as he had said, and Yahweh did to Sarah as he had promised. 21 ² And Sarah conceived, and bore Abraham a son in his old age at the time of which God had spoken to him. 21 ³ Abraham called the name of his son who was born to him, whom Sarah bore him, Isaac. 21 ⁴ And Abraham circumcised his son Isaac when he was eight days old, as God had commanded him. 21 ⁵ Abraham was a hundred years old when his son Isaac was born to him. 21 ⁶ And Sarah said, "God has made laughter for me; everyone who hears will laugh over me." 21 ⁷ And she said, "Who would have said to Abraham that Sarah would suckle children? Yet I have borne him a son in his old age." - Hagar and Ishmael are sent away.  Gn.21.8-21

21 ⁸ And the child grew, and was weaned; and Abraham made a great feast on the day that Isaac was weaned.