Treasury of Scripture Knowledge
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.
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.
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.