Matthew 5:27-30:
“You have heard that it was said, ‘You shall not commit adultery.’ But I say to you that everyone who looks at a woman with lustful intent has already committed adultery with her in his heart. If your right eye causes you to sin, tear it out and throw it away. For it is better that you lose one of your members than that your whole body be thrown into hell. And if your right hand causes you to sin, cut it off and throw it away. For it is better that you lose one of your members than that your whole body go into hell."
Frederick Dale Bruner:
The central meaning of Jesus’ advice is to take decisive, drastic action against that habit, thing, or person, that though pleasurable and perhaps seemingly necessary, is in fact ruining life . . . Better to go limping into heaven than leaping into hell."