John Gills Exposition of the Bible Commentary - Proverbs 14:13
Even in laughter the heart is sorrowful ,.... As Belshazzar's was in the midst of his feast and jollity, when he saw the writing on the wall; so sin may stare a man in the face, and guilt load his conscience and fill him with sorrow, amidst his merriment; a man may put on a merry countenance, and feign a laugh, when his heart is very sorrowful; and oftentimes this sorrow comes by sinful laughter, by mocking at sin and jesting at religion; and the end of that mirth is heaviness :... read more
Matthew Henry's Complete Commentary - Proverbs 14:13
This shows the vanity of carnal mirth, and proves what Solomon said of laughter, that it is mad; for, 1. There is sadness under it. Sometimes when sinners are under convictions, or some great trouble, they dissemble their grief by a forced mirth, and put a good face on it, because they will not seem to yield: they cry not when he binds them. Nay, when men really are merry, yet at the same time there is some alloy or other to their mirth, something that casts a damp upon it, which all their... read more