Proverbs 25:20-22

Expanded Bible

²⁰ Singing songs to ·someone who is sad [^La troubled heart]
    is like taking away his coat on a cold day
or pouring vinegar on soda [^Csodium bicarbonate; mixing the two would cause an adverse reaction; the Greek Old Testament reads “scab” or “wound” instead of “soda”].

²¹ If ·your enemy [^Lone you hate] is hungry, feed him.
    If he is thirsty, give him a drink.
²² Doing this will be like pouring burning coals on his head,
    and the Lord will reward you [Rom. 12:19–21].