Proverbs 26:11
Like as the dog turneth again to his vomit, even so a fool beginneth his foolishness again afresh.
2 Peter 2:22
It is happened unto them according to the true proverb, "The dog is turned to his vomit again, and the sow that was washed, is returned to her wallowing in the mire."
Exodus 8:15
But when Pharaoh saw that he had rest given him, he hardened his heart and hearkened not unto them, as the LORD had said.
Matthew 12:45
Then he goeth his way, and taketh unto him seven other spirits worse than himself, and so enter they in and dwell there. And the end of that man is worse than the beginning. Even so shall it be with this evil nation."