As vinegar upon nitre, by which the nitre is rendered useless.
Is he that singeth songs to an heavy heart. — Not the true sympathy advised by St. Paul. (Romans 12:15.)
Related Commentaries of Proverbs 25:20
Proverbs 25:20
20 As he that taketh away a garment in cold weather, and as vinegar upon nitre, so is he that singeth songs to an heavy heart.