2 Peter 2:18-22

18For they mouth empty, boastful words and, by appealing to the lustful desires of the flesh, they entice people who are just escaping from those who live in error. 19They promise them freedom, while they themselves are slaves of depravity—for “people are slaves to whatever has mastered them.” 20If they have escaped the corruption of the world by knowing our Lord and Savior Jesus Christ and are again entangled in it and are overcome, they are worse off at the end than they were at the beginning. 21It would have been better for them not to have known the way of righteousness, than to have known it and then to turn their backs on the sacred command that was passed on to them. 22Of them the proverbs are true: “A dog returns to its vomit,” Prov. 26:11 and, “A sow that is washed returns to her wallowing in the mud.”