Treasury of Scripture Knowledge
Summary
As a dog returneth to his vomit, so a fool returneth to his folly.
A dog
Bible References
A dog
Matthew 12:45
Then it goes off to fetch seven other spirits worse than itself; they go in and dwell there, and the last state of that man is worse than the first. This is how it will be with the present evil generation."
2 Peter 2:22
They verify the truth of the proverb: "The dog turns back to what he has vomited, the sow when washed will wallow in the mire."