It shall dwell in his tabernacle— They shall take up their habitation in his tent, because he hath no survivor: brimstone shall be sprinkled upon his habitation. As much as to say, "Since he hath no one to survive him, his posterity is utterly exterminated: horror takes possession of his habitation, and it is sprinkled with brimstone, that no person may ever after inhabit it, but that it may remain an object of terror to future ages." The image is grand, and worthy of the tragic style. Heath. But I should rather think, that the sprinkling of brimstone upon his habitation alludes to the known custom of purifying a house with sulphur, after it had been abused to wicked and riotous purposes. See Numbers 31:20.
Related Commentaries of Job 18:15
Job 18:15
15 It shall dwell in his tabernacle, because it is none of his: brimstone shall be scattered upon his habitation.