4 and when the boy was eight days old, Abraham circumcised him, just as the Lord had commanded.
5 Abraham was a hundred years old when Isaac was born,
6 and Sarah said, “God has made me laugh. Now everyone will laugh with me.
7 Who would have dared to tell Abraham that some day I would have a child? But in his old age, I have given him a son.”
8 The time came when Sarah no longer had to nurse Isaac, and on that day Abraham gave a big feast.
9-10 One day, Sarah noticed Hagar's son Ishmael playing, and she said to Abraham, “Get rid of that Egyptian slave woman and her son! I don't want him to inherit anything. It should all go to my son.”
11 Abraham was worried about Ishmael.