Proverbs 26:11

Like a dog that returns to his vomit is a fool who repeats his folly.

2 Peter 2:22

What the true proverb says has happened to them: "The dog returns to its own vomit, and the sow, after washing herself, returns to wallow in the mire."

Exodus 8:15

But when Pharaoh saw that there was a respite, he hardened his heart and would not listen to them, as the LORD had said.

Matthew 12:45

Then it goes and brings with it seven other spirits more evil than itself, and they enter and dwell there, and the last state of that person is worse than the first. So also will it be with this evil generation."

Treasury of Scripture Knowledge

Summary

As a dog returneth to his vomit, so a fool returneth to his folly.

General references

Bible References

A dog

Exodus 8:15
But when Pharaoh saw that there was a respite, he hardened his heart and would not listen to them, as the LORD had said.
Matthew 12:45
Then it goes and brings with it seven other spirits more evil than itself, and they enter and dwell there, and the last state of that person is worse than the first. So also will it be with this evil generation."
2 Peter 2:22
What the true proverb says has happened to them: "The dog returns to its own vomit, and the sow, after washing herself, returns to wallow in the mire."

General references

Isaiah 28:8
For all tables are full of filthy vomit, with no space left.
Jeremiah 34:11
But afterward they turned around and took back the male and female slaves they had set free, and brought them into subjection as slaves.

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.