Proverbs 10:18-20

Revised Standard Version

¹⁸ He who conceals hatred has lying lips,
    and he who utters slander is a fool.
¹⁹ When words are many, transgression is not lacking,
    but he who restrains his lips is prudent.
²⁰ The tongue of the righteous is choice silver;
    the mind of the wicked is of little worth.