Proverbs 25:18-20

New Revised Standard Version Catholic Edition

¹⁸ Like a war club, a sword, or a sharp arrow
    is one who bears false witness against a neighbor.
¹⁹ Like a bad tooth or a lame foot
    is trust in a faithless person in time of trouble.
²⁰ Like vinegar on a wound^[a]
    is one who sings songs to a heavy heart.
Like a moth in clothing or a worm in wood,
    sorrow gnaws at the human heart.^[b]