3 And Abraham called the name of his son who was born to him—whom Sarah bore to him—Isaac.
4 Then Abraham circumcised his son Isaac when he was eight days old, as God had commanded him.
5 Now Abraham was one hundred years old when his son Isaac was born to him.
6 And Sarah said, “God has made me laugh, and all who hear will laugh with me.”
7 She also said, “Who would have said to Abraham that Sarah would nurse children? For I have borne him a son in his old age.”
8 So the child grew and was weaned. And Abraham made a great feast on the same day that Isaac was weaned.
9 And Sarah saw the son of Hagar the Egyptian, whom she had borne to Abraham, scoffing.