Concerning the Nature of Good, Against the Manichaeans

Since these things are so, according to the Catholic faith, and wholesome doctrine, and truth perspicuous to those of good understanding, neither can any one hurt the nature of God, nor can the nature of God unrighteously hurt any one, or suffer any one to do hurt with impunity. "For he that does hurt shall receive," says the apostle, "according to the hurt that he has done; and there is no accepting of persons with God."