3 Abraham named his son—the one Sarah bore him—Isaac.
4 Abraham circumcised his son Isaac when he was eight days old just as God had commanded him.
5 Abraham was 100 years old when his son Isaac was born.
6 Sarah said, "God has given me laughter. Everyone who hears about it will laugh with me."
7 She said, "Who could have told Abraham that Sarah would nurse sons? But now I’ve given birth to a son when he was old!"
8 The boy grew and stopped nursing. On the day he stopped nursing, Abraham prepared a huge banquet.
9 Sarah saw Hagar’s son laughing, the one Hagar the Egyptian had borne to Abraham.