Proverbs 25:18-20

New Century Version

¹⁸ When you lie about your neighbors,
    it hurts them as much as a club, a sword, or a sharp arrow.

¹⁹ Trusting unfaithful people when you are in trouble
    is like eating with a broken tooth or walking with a crippled foot.

²⁰ Singing songs to someone who is sad
    is like taking away his coat on a cold day
    or pouring vinegar on soda.