Job 41:19

Out of his mouth proceed lamps. As kindled torches of fire. 58. For those who look forward are called his 'eyes,' but those who preach, his 'mouth.' But lamps proceed from this 'mouth,' because they inflame the minds of their hearers to the love of misbelief, and from seeming to shine by wisdom, they doubtless thence burn with wickedness. But what kind of light their wisdom is, is shewn, when it is immediately subjoined, As kindled torches of fire. 59. Behold the hypocrisy of those is now plainly described, whose preaching is compared to lamps of torches. For when a torch is lighted, it has a sweet scent, but a dismal light. And so because these preachers of Antichrist claim to themselves a show of sanctity, but yet practise works of iniquity, the smell, as it were, which they emit is pleasant, but the light they give is dark. For they smell sweetly through their pretence of righteousness, but burn gloomily by their perpetration of iniquity. The malice of their hypocrisy John sums up in a brief description in the Apocalypse, saying; I beheld another beast coming up out of the earth, having two horns like a lamb's, and he spake as a dragon. [Rev. 13, 11] He had spoken indeed of the first beast, that is, Antichrist, in a former description; after whom this other beast is said to have also come up, because the multitude of his preachers after him boasts in his earthly power. For to come up from the earth is to boast in earthly glory. And it has two horns like a lamb, because, through his pretended sanctity, he falsely asserts that that wisdom and conduct exist in him, which the Lord truly possessed in Himself in a special manner. But because under the appearance of a lamb he infuses into his reprobate hearers the poison of serpents, it is there rightly subjoined; And he spake as a dragon. […]

Third, he describes the work or effect of his mouth when he says, "from his mouth lamps go forth like flaming pine logs." Consider here that a pine log is a type of wood which when lit gives forth a pleasant odor. It is said …

Out of his mouth go burning lamps, and sparks of fire leap out. Which, though hyperbolical expressions, have some foundation for them in the latter; in the vast quantities of water thrown out by the whale, through its mouth or hole in its frontispiece, which in the sun may look like lamps and sparks of fire, as before observed; and especially in the "orcae", or whales with teeth, which eject in the same way an oily mucus, or the fat liquor of the brain, commonly called spermaceti, which may appear more bright and glittering.

Lamps - This also better agrees with the crocodile, which breathes like the river-horse, of which ancient authors affirm, that his nostrils are very large, and he breathes forth a fiery smoke like that of a furnace.

Probably these hyperbolical expressions are used concerning the leviathan to intimate the terror of the wrath of God, for that is it which all this is designed to convince us of.