Proverbs Chapter 26, Verse 11

11: As a dog returneth to his vomit, so a fool returneth to his folly.- edit KJV text
11: As a dog that returneth to his vomit, so is the fool that repeateth his folly.— edit Douay text
11: As when a dog goes to his own vomit, and becomes abominable, so is fool who returns in his wickedness to his own sin. [[There is a shame that brings sin: and there is a shame [that is] glory and grace.]]— edit LXX text