Proverbs 10:11 - Joseph Benson’s Commentary on the Old and New Testaments

The mouth of a righteous man is a well of life Continually sending forth waters of life, or such words as are refreshing and useful, both to himself and others, both for the preserving of natural life, the promoting of spiritual, and ensuring of eternal life; but violence, &c. See on Proverbs 10:6. As the mouth of a good man speaketh those things which are good and beneficial to himself and others, so the mouth of a wicked man uttereth violence, or injury, or things injurious to others, which at last fall upon himself.