Job 5:2 - Joseph Benson’s Commentary on the Old and New Testaments

For wrath killeth the foolish man, &c. That is, say some, a man's wrath and impatience prey upon his spirit, and so hasten his death. But the meaning seems rather to be, as Bishop Patrick observes, that “God in his anger and indignation destroys the wicked, and such as err from his precepts.” It is probable that Eliphaz intended to distinguish Job by the characters of foolish and silly one, to insinuate that all his misfortunes were owing to his folly and weakness, or to his sins and vices. By the foolish is meant the rash and inconsiderate man, who does not weigh things impartially; and by the silly one, the man who, for want of true wisdom, is soon deceived with false opinions, and with appearances of present things.