Proverbs 14:13

Even in laughter the heart is sorrowful; and the end of that mirth is heaviness.

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: sometimes in this life a sinner mourns at last, and mourns for his wicked mirth, or that he has made himself so merry with religious persons and things, and oftentimes when it is too late; so the end of that mirth the fool in the Gospel promised himself was heaviness, when his soul was required of him; this was the case of the rich man who had his good things here, and his evil things hereafter.