2 Peter 2:17-22

These are springs without water, and mists driven by a storm; for whom the blackness of darkness hath been reserved. For, uttering great swelling words of vanity, they entice in the lusts of the flesh, by lasciviousness, those who are just escaping from them that live in error; promising them liberty, while they themselves are bondservants of corruption; for of whom a man is overcome, of the same is he also brought into bondage. For if, after they have escaped the defilements of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein and overcome, the last state is become worse with them than the first. For it were better for them not to have known the way of righteousness, than, after knowing it, to turn back from the holy commandment delivered unto them. It has happened unto them according to the true proverb, The dog turning to his own vomit again, and the sow that had washed to wallowing in the mire.