19 Faustus, therefore, is wrong in supposing that the Lord Jesus fulfilled some precepts of righteous men who lived before the law of Moses, such as, "You shall not kill," which Christ did not oppose, but rather confirmed by His prohibition of anger and abuse; and that He destroyed some things apparently peculiar to the Hebrew law, such as, "An eye for an eye, and a tooth for a tooth," which Christ seems rather to abolish than to confirm, when He says, "But I say unto you, that you resist not evil; but if any one smite you on your right cheek, turn to him the other also," and so on. But we say that even these things which Faustus thinks Christ destroyed by enjoining the opposite, were suitable to the times of the Old Testament, and were not destroyed, but fulfilled by Christ.
Source: Reply to Faustus the Manichaean (New Advent)