2 Although Abraham was very old, Sarah had a son exactly at the time God had said.
3 Abraham named his son Isaac,
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.