Genesis 21:2-4

New International Version

² Sarah became pregnant and bore a son^(A) to Abraham in his old age,^(B) at the very time God had promised him.^{(C) 3} Abraham gave the name Isaac^[a](D) to the son Sarah bore him. ⁴ When his son Isaac was eight days old, Abraham circumcised him,^(E) as God commanded him.