They are as stubble before the wind, and as chaff that the storm carrieth away.

King James Translators' Notes

carrieth: Heb. stealeth

Jamieson-Fausset-Brown Bible Commentary

18. Job alludes to a like sentiment of Bildad (Job 18:18), using his own previous words (Job 13:25).

Matthew Henry's Concise Commentary

21:17-26 Job had described the prosperity of wicked people; in these verses he opposes this to what his friends had maintained about their certain ruin in this life. He reconciles this to the holiness and justice of God. Even while they prosper thus, they are light and worthless, of no account with God, or with wise men. In the height of their pomp and power, there is but a step between them and ruin. Job refers the difference Providence makes between one wicked man and another, into the wisdom of God. He is Judge of all the earth, and he will do right. So vast is the disproportion between time and eternity, that if hell be the lot of every sinner at last, it makes little difference if one goes singing thither, and another sighing. If one wicked man die in a palace, and another in a dungeon, the worm that dies not, and the fire that is not quenched, will be the same to them. Thus differences in this world are not worth perplexing ourselves about.