Proverbs 30 12
There are some who see themselves as pure but they're still filthy—they have not been washed.
Compare with other 3 random translations
GW Proverbs 30:12A certain kind of person thinks he is pure but is not washed from his own feces.
KJV Proverbs 30:12There is a generation that are pure in their own eyes, and yet is not washed from their filthiness.
WEB Proverbs 30:12There is a generation that is pure in their own eyes, yet are not washed from their filthiness.