There has befallen them the thing spoken of in the true proverb, The dog turns back to his own vomit, and, The sow is washed only to wallow again in the mire. [Prov. 26:11.]
As a dog returns to his vomit, so a fool returns to his folly.
Jesus used this parable (illustration) with them, but they did not understand what He was talking about.
If the disease returns, breaking out in the house after he has removed the stones and has scraped and plastered the house,