Hast thou with him spread out the sky, which is strong, and as a molten looking {o} glass?

(o) For the clearness.

Wesley's Notes

37:18 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.

Jamieson-Fausset-Brown Bible Commentary

18. with him-like as He does (Job 40:15).

spread out-given expanse to.

strong pieces-firm; whence the term "firmament" ("expansion," Ge 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.

Matthew Henry's Concise Commentary

37:14-20 Due thoughts of the works of God will help to reconcile us to all his providences. As God has a powerful, freezing north wind, so he has a thawing, composing south wind: the Spirit is compared to both, because he both convinces and comforts, So 4:16. The best of men are much in the dark concerning the glorious perfections of the Divine nature and the Divine government. Those who, through grace, know much of God, know nothing, in comparison with what is to be known, and of what will be known, when that which is perfect is come.