Isaac was thirty-seven years old when he went to Mount Moriah, and Ishmael was fifty years old. Contention arose between Eliezer and Ishmael. Ishmael said to Eliezer: Now that Abraham will offer Isaac his son for a burnt offering, kindled upon the altar, and I am his first-born son, I will inherit (the possessions of) Abraham. Eliezer replied to him, saying: He has already driven thee out like a woman divorced from her husband, and he has sent thee away to the wilderness, but I am his servant, serving him by day and by night, and I shall be the heir of Abraham. The Holy Spirit answered them, saying to them: Neither this one nor that one shall inherit.