God thunders wondrously with his voice; he does great things that we cannot comprehend.
Thunder and lightning, which usually go together, are sensible indications of the glory and majesty, the power and terror, of Almighty God, one to the ear and the other to the eye; in these God leaves not himself without witness of his greatness, as, in the rain from heaven and fruitful seasons, he leaves not himself without witness of his goodness (Act 14:17), even to the most stupid and unthinking.
Commenting on Job 37:1-5
God thundereth marvellously with his voice,.... Or "marvels" (c), or marvellous things, which may respect the marvellous effects of thunder and lightning: such as rending rocks and mountains; throwing down high and strong towers; shattering to pieces high and mighty oaks and cedars, and other such like effects, mentioned in Psa 29:5; and there are some things reported which seem almost incredible, were they not...
(Job 36:26; Psa 65:6; Psa 139:14). The sublimity of the description lies in this, that God is everywhere in the storm, directing it whither He will [BARNES]. See Psa 29:1-11, where, as here, the "voice" of God is repeated with grand effect. The thunder in Arabia is sublimely terrible.