Adam Clarke on Job 27:13

This is the portion of a wicked man - Job now commences his promised teaching; and what follows is a description of the lot or portion of the wicked man and of tyrants. And this remuneration shall they have with God in general, though the hand of man be not laid upon them. Though he does not at all times show his displeasure against the wicked, by reducing them to a state of poverty and affliction, yet he often does it so that men may see it; and at other times he seems to pass them by, reserving their judgment for another world, that men may not forget that there is a day of judgment and perdition for ungodly men, and a future recompense for the righteous.