Matthew 5:27-30 Ye have heard that it was said, Thou shalt not commit adultery:

ASV⁽ⁱ⁾ ²⁷ Ye have heard that it was said, Thou shalt not commit adultery: ²⁸ but I say unto you, that every one that looketh on a woman to lust after her hath committed adultery with her already in his heart. ²⁹ And if thy right eye causeth thee to stumble, pluck it out, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not thy whole body be cast into hell. ³⁰ And if thy right hand causeth thee to stumble, cut it off, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not thy whole body go into hell.