God did not seek sacrifices and holocausts, but faith, and obedience, and righteousness, for the sake of their salvation. As God said, teaching his will through Hosea the prophet, “What I want is love, not sacrifice; knowledge of God, not holocausts.” Our Lord taught the same, saying “If you had understood the meaning of the words: What I want is mercy, not sacrifice, you would not have condemned the blameless.”
— Saint Irenaeus (late 2nd Century)