Keep listening to the thunder of his voice and the rumbling that comes from his mouth.
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
Hear attentively the noise of his voice,.... Of the voice of God in the clouds; and of thunder, which is his voice, Job 40:9. Elihu being affected with it himself, exhorts the company about him to hearken and listen to it, and learn something from it; and the sound that goeth out of his mouth: as the former clause may have respect to loud thunder...
Hear attentively--the thunder (noise), &c., and then you will feel that there is good reason to tremble. sound--muttering of the thunder.