Who layeth the beams of his chambers in the waters: who maketh the clouds his chariot: who walketh upon the wings of the wind:
Who layeth the beams of his chambers in the waters - rather, 'Who layeth the beams of His upper chambers with waters.' The waters above are the materials out of which the glorious structure is reared. Similarly, in the main, the Chaldaic and Vulgate. Compare Genesis 50:7, 'God made the expanse (the vaulted sky: the English version, the firmament), and divided the waters which were under the expanse from the waters which were above the expanse.' To construct out of the movable waters a firm palace, the cloudy heaven, 'strong as a molten glass' (Job 37:18), is a magnificent work of divine omnipotence. The citadel of cloud gets the name of the upper chamber of God, as being the upper part of the fable of the world. The under one is the earth (Psalms 104:5) (Hengstenberg). It is not the upper chamber of God, where he dwells above the waters, and hidden from view, that is meant; because the context is not concerning the hidden, but the manifested glory of God. So in Psalms 104:13 it is from the same upper chambers of watery cloud that He watereth with rain the hills.
Who maketh the clouds his chariot - driving them at will, as a king does his chariot.
Who walketh upon the wings of the wind - (Psalms 18:10.) God directs at pleasure the winged winds. The winds are mentioned naturally in connection with the clouds which they drive before them as fleet steeds.