Job 27:18

“He buildeth his house as a moth, etc.] Which builds its house in a garment by eating into it, and so destroying it, and in time eats itself out of house and home, and however does not continue long in it, but is soon and easily shook out, or brushed off; so a wicked man builds himself an house, a stately palace, like Arcturus f950; so some render the words from (<180909>Job 9:9), a palace among the stars, an heavenly palace and paradise, and expects it will continue for ever; but as he builds it with the mammon of unrighteousness, and to the prejudice and injury of others, and with their money, or what was due to them, so by his sins and iniquities he brings ruin and destruction upon himself…”

“(Job 8:14; Job 4:19). The transition is natural from "raiment" (Job 27:16) to the "house" of the "moth" in it, and of it, when in its larva state. The moth worm's house is broken whenever the "raiment" is shaken out, so frail is it. booth--a bough-formed hut which the guard of a vineyard raises for temporary shelter (Isa 1:8).”

“He buildeth his house as a moth - The house which the moth builds is the slight fabric which it makes for its own dwelling in the garment which it consumes. On this verse compare Job 8:14. The dwelling of the moth is composed of the materials of the garment on which it feeds, and there may be an allusion here not only to the fact that the house which the wicked reared for themselves would be temporary, and that it would soon pass away like the dwelling of the moth, but that it was obtained - like the dwelling of the moth - at the expense of others. The idea of frailty, however, and of its being only a very temporary habitation, is probably the main thought in the passage. The allusion here…”

“A moth - Which settleth itself in a garment, but is quickly and unexpectedly dispossessed of its dwelling, and crushed to death. A booth - Which the keeper of a garden or vineyard suddenly rears up in fruit - time, and as quickly pulls down again. Job 27:19”

“as a moth: Job 8:14, Job 8:15; Isa 51:8 as a booth: Isa 1:8, Isa 38:12; Lam 2:6 Job 27:19”