Proverbs 26:11
Like a dog returning to his vomit [is] a fool reverting to his folly.
2 Peter 2:22
The [statement] of the true proverb has happened to them, "A dog returns to its own vomit," and "A sow, [after] washing herself, [returns] to wallowing in the mud."
Exodus 8:15
And Pharaoh saw that there was relief, and he made his heart {insensitive}, and he did not listen to them, as Yahweh had spoken.
Matthew 12:45
Then it goes and brings along with itself seven other spirits more evil than itself, and [they] go in [and] live there. And the last [state] of that person becomes worse than the first. So it will be for this evil generation also!"