Matthew 5:27-29

27Jesus then said, ‘You know what God's rule says: “You must not have sex with anyone who is not your husband or your wife.”

28But what I tell you is this: A man may look at a woman who is not his wife. And he may want to have sex with her. In his thoughts, he has had sex with her, so he has done a wrong thing.

29If your right eye leads you to do wrong things, then you should take it out. You should throw it away. Yes, you will lose one eye. But it will be much worse if you keep your whole body and God throws you into hell.