^{2 Ref} And Sarah became with child, and gave Abraham a son when he was old, at the time named by God.

^{3 Ref} And Abraham gave to his son, to whom Sarah had given birth, the name Isaac.

^{4 Ref} And when his son Isaac was eight days old, Abraham made him undergo circumcision, as God had said to him.

^{5 Ref} Now Abraham was a hundred years old when the birth of Isaac took place.