When he uttereth his voice, there is a multitude of waters in the heavens, and he causeth the vapours to ascend from the ends of the earth; he maketh lightnings with rain, and bringeth forth the wind out of his treasures.
When He uttereth His voice - literally, 'At the voice of His giving forth,' i:e., when He thundereth, (Job 38:34; Psalms 29:3-5, "The voice of the Lord is upon the waters, the God of glory thundereth," etc.)
Waters in the heavens - (Genesis 1:7), above the firmament; heavy rains accompany thunder.
He causeth the vapours to ascend - (Psalms 135:7).
Treasures - His stores.