Genesis 21:3-8
3 Abraham called his son who was born to him, whom Sarah bore to him, Isaac. 4 Abraham circumcised his son, Isaac, when he was eight days old, as God had commanded him. 5 Abraham was one hundred years old when his son, Isaac, was bor...
3 Abraham called his son who was born to him, whom Sarah bore to him, Isaac. 4 Abraham circumcised his son, Isaac, when he was eight days old, as God had commanded him. 5 Abraham was one hundred years old when his son, Isaac, was born to him. 6 Sarah said, “God has made me laugh. Everyone who hears will laugh with me.” 7 She said, “Who would have said to Abraham that Sarah would nurse children? For I have borne him a son in his old age.”
8 The child grew and was weaned. Abraham made a great feast on the day that Isaac was weaned.