Adam Clarke on Job 37:5

God thundereth marvellously with his voice - This is the conclusion of Elihu's description of the lightning and thunder: and here only should chapter 36 have ended. He began, Job 36:29, with the noise of God's tabernacle; and he ends here with the marvellous thundering of Jehovah. Probably the writer of the book of Job had seen the description of a similar thunder storm as given by the psalmist, Psa 77:16-19 : - Psa 77:16 The waters saw thee, O God!The waters saw thee, and were afraid.Yea, the deeps were affrighted! Psa 77:17 The clouds poured out water;The ethers sent forth a sound;Yea, thine arrows went abroad. Psa 77:18 The voice of thy thunder was through the expanse:The lightnings illumined the globe;The earth trembled and shook! Psa 77:19 Thy way is in the sea,And thy paths on many waters;But thy footsteps are not known.

Great things doeth he - This is the beginning of a new paragraph; and relates particularly to the phenomena which are afterwards mentioned. All of them wondrous things; and, in many respects, to us incomprehensible.