Proverbs 18:19-21

Common English Bible

¹⁹ An offended ally is more formidable than a city;
    such quarreling is like the bars of a castle.
²⁰ The stomach is satisfied
by the fruit of the mouth;
    one’s lips can earn a satisfying income.
²¹ Death and life are in the power of the tongue;
    those who love it will eat its fruit.