Proverbs 25:19-21

New Century Version

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.

²¹ If your enemy is hungry, feed him.
    If he is thirsty, give him a drink.