Proverbs 26:11
Like a dog going back to the food which he has not been able to keep down, is the foolish man doing his foolish acts over again.
2 Peter 2:22
They are an example of that true saying, The dog has gone back to the food it had put out, and the pig which had been washed to its rolling in the dirty earth.
Exodus 8:15
But when Pharaoh saw that there was peace for a time, he made his heart hard and did not give ear to them, as the Lord had said.
Matthew 12:45
Then he goes and takes with him seven other spirits worse than himself, and they go in and make it their living-place: and the last condition of that man is worse than the first. Even so will it be with this evil generation.