2 Peter 2:21-22

New Testament for Everyone

²¹ It would have been better for them never to have known the way of righteousness than, having known it, to turn away from the holy commandment which had been given to them. ²² There is a true proverb which now applies to them: the dog returns to its own vomit, and the sow gets washed only to wallow once more in the mud.