Proverbs 10:20-21

The tongue of the just is as choice silver Of great worth and use, bringing credit to himself, and great benefit to others; the heart of the wicked is little worth And consequently his tongue, which speaketh out of the abundance of the heart, Matthew 12:34. The lips of the righteous feed many By their wise and pious discourses, counsels, and comforts, which are so many evidences of their wisdom: but fools die for want of wisdom They have not wisdom to preserve themselves, much less to feed others.