4. And he circumcised him the eighth day, as God had commanded him,
5. When he was a hundred years old: for at this age of his father was Isaac born.
6. And Sara said: God hath made a laughter for me: whosoever shall hear of it will laugh with me.
7. And again she said: Who would believe that Abraham should hear that Sara gave suck to a son, whom she bore to him in his old age.
8. And the child grew and was weaned: and Abraham made a great feast on the day of his weaning.
9. And when Sara had seen the son of Agar the Egyptian playing with Isaac her son, she said to Abraham:
10. Cast out this bondwoman, and her son: for the son of the bondwoman shall not be heir with my son Isaac.
11. Abraham took this grievously for his son.
12. And God said to him: Let it not seem grievous to thee for the boy, and for thy bondwoman: in all that Sara hath said to thee, hearken to her voice: for in Isaac shall thy seed be called.