(18) Spread out the sky. — Some understand this of the action of the sun in dispersing the clouds; but it seems more probable that it refers to God. “Hast thou spread out with Him the magnificent dome of heaven?” The words used, however, imply the clouds rather than the cloudless sky which resembles a burnished mirror; so that it is not improbable that the sun may be the subject here and in the following verses.
Related Commentaries of Job 37:18
Job 37:18
18 Hast thou with him spread out the sky, which is strong, and as a molten looking glass?