Job 37:18

“Hast thou with him spread out the sky? etc.] Wast thou concerned with him at the first spreading out of the sky? wast thou an assistant to him in it? did he not spread it as a curtain or canopy about himself, without the help of another? verily he did; (see <180908>Job 9:8) (<234424>Isaiah 44:24); [which] is strong: for though it seems a fluid and thin, is very firm and strong, as appears by what it bears, and are contained in it; and therefore is called “the firmament of his power”, (<19F001>Psalm 150:1); [and] as a molten looking glass; clear and transparent, like the looking glasses of the women, made of molten brass, (<023808>Exodus 38:8); and firm and permanent f1291; and a glass this…”

“with him--like as He does (Job 40:15). spread out--given expanse to. strong pieces--firm; whence the term "firmament" ("expansion," Gen 1:6, Margin; Isa 44:24). molten looking glass--image of the bright smiling sky. Mirrors were then formed of molten polished metal, not glass.”

“Hast thou with him spread out the sky? - That is, wert thou employed with God in performing that vast work, that thou canst explain how it was done? Elihu here speaks of the sky as it appears, and as it is often spoken of, as an expanse or solid body spread out over our heads, and as sustained by some cause which is unknown. Sometimes in the Scriptures it is spoken of as a curtain (Notes, Isaiah 40:22); sometimes as a “firmament,” or a solid body spread out (Septuagint, Genesis 1:6-7); sometimes as a fixture in which the stars are placed (Notes, Isaiah 34:4), and sometimes as a scroll that may be rolled up, or as a garment, Psalms 102:26. There is no reason to suppose that the true cause of…”

“With him - Wast thou his assistant in spreading out the sky like a canopy over the earth? Strong - Which though it be very thin and transparent, yet is also firm and compact and steadfast. Looking glass - Made of brass and steel, as the manner then was. Smooth and polished, without the least flaw. In this, as in a glass, we may behold the glory of God and the wisdom of his handy - work. Job 37:19”

“spread: Job 9:8, Job 9:9; Gen 1:6-8; Psa 104:2, Psa 148:4-6, Psa 150:1; Pro 8:27; Isa 40:12, Isa 40:22; Isa 44:24 as: Exo 38:8 Job 37:19”