Matthew 5:27-28; Matthew 19:18

27 Ye have heard that it was said by them of old time, Thou shalt not commit adultery : 28 But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
18 He saith unto him, Which ? Jesus said , Thou shalt do no murder , Thou shalt not commit adultery , Thou shalt not steal , Thou shalt not bear false witness ,