Proverbs 12:18-20

Revised Standard Version

¹⁸ There is one whose rash words are like sword thrusts,
    but the tongue of the wise brings healing.
¹⁹ Truthful lips endure for ever,
    but a lying tongue is but for a moment.
²⁰ Deceit is in the heart of those who devise evil,
    but those who plan good have joy.