John 8:34   Jesus answered them, Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin.

Matthew 5:28   But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.

Matthew 12:31-32   Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men.
32. And whosoever speaketh a word against the Son of man, it shall be forgiven him: but whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come.

Matthew 15:18-20   But those things which proceed out of the mouth come forth from the heart; and they defile the man.
19. For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:
20. These are the things which defile a man: but to eat with unwashen hands defileth not a man.

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