Job 4:9

“By the blast of God they perish, etc.] They and their works, the ploughers, sowers, and reapers of iniquity; the allusion is to the blasting of corn by the east wind, or by mildew, etc. having used the figures of ploughing and sowing before; and which is as soon and as easily done as corn, or anything else, is blasted in the above manner; and denotes the sudden and easy destruction of wicked men by the power of God, stirred up by his wrath and indignation, because of their sins; who when he blows a blast on their persons, substance, and families, they perish at once: and by the breath of his nostrils are they consumed; meaning his wrath and anger, which is like a stream of brimstone, and…”

“breath of his nostrils--God's anger; a figure from the fiery winds of the East (Job 1:16; Isa 5:25; Psa 18:8, Psa 18:15).”

“By the blast of God - That is, by the judgment of God. The figure is taken from the hot and fiery wind, which, sweeping over a field of grain, dries it up and destroys it. In like manner Eliphaz says the wicked perish before God. And by the breath of his nostrils - By his anger. The Scripture often speaks of breathing out indignation and wrath; Acts 9:1; Psalms 27:12; 2 Samuel 22:16; Psalms 18:15; Psalms 33:6; notes at Isaiah 11:4; notes at Isaiah 30:28; notes at Isaiah 33:11. The figure was probably taken from the violent breathing which is evinced when the mind is under any strong emotion, especially anger. It refers here to any judgment by which God cuts off the wicked, but especially to…”

“The blast - Of his nostrils, as it follows; by his anger, which in men shews itself, in the nostrils, by hot and frequent breathings there, by a secret, but mighty judgment of God, they are blown away as chaff by the wind. Job 4:10”

“4:9 They vanish in a blast of his anger: Eliphaz understood the wind of 1:19 as divine judgment (cp. Isa 40:7; Hos 13:15).”

“the blast: Exo 15:8, Exo 15:10; Kg2 19:7; Psa 18:15 by the breath of his nostrils: that is, by his anger, Job 1:19, Job 15:30; Isa 11:4, Isa 30:33; Th2 2:8; Rev 2:16 Job 4:10”