Proverbs 10:18-20

Complete Jewish Bible

¹⁸ He who covers up hate has lips that lie,
    and anyone who slanders is a fool.
¹⁹ When words are many, sin is not lacking;
    so he who controls his speech is wise.
²⁰ The tongue of the righteous is like pure silver,
    but the mind of the wicked is worth little.