3 Abraham gave the name Isaac to the son Sarah had by him.
4 When his son Isaac was eight days old, Abraham circumcised him. He did it exactly as God had commanded him.
5 Abraham was 100 years old when his son Isaac was born to him.
6 Sarah said, "God has given laughter to me. Everyone who hears about this will laugh with me."
7 She continued, "Who would have said to Abraham that Sarah would nurse children? But I've had a son by him when he is old."
8 Isaac grew. The time came for his mother to stop nursing him. On that day Abraham had a big dinner prepared.
9 But Sarah saw Ishmael making fun of Isaac. Ishmael was the son Hagar had by Abraham. Hagar was Sarah's servant from Egypt.