It is fitting therefore that the holy Fathers see Mary as used by God not merely in a passive way, but as freely cooperating in the work of human salvation through faith and obedience. For, as St. Irenaeus says, "being obedient, she became the cause of salvation for herself and for the whole human race." Hence not a few of the early Fathers gladly assert in their preaching, "The knot of Eve's disobedience was untied by Mary's obedience; what the virgin Eve bound through her unbelief, the Virgin Mary loosened by her faith." Comparing Mary with Eve, they call her "the Mother of the living," and still more often they say: "death through Eve, life through Mary."