Psalms 104:3

Who layeth the beams of his chambers— He flooreth his chambers with waters: i.e. "The clouds make the flooring of his heavens." Mudge. By these chambers are meant, though not the supreme, yet the superior or middle regions of the air. It is here described as an upper story in a house, laid firm with beams; (accounting the earth, and the region of air around it, as the lowest story:) and this floor is here poetically said to be laid in the waters; i.e. in watery clouds. Now, whereas in the building of an upper story there must be some walls or pillars to support the weight of it, and on which the beams must be laid; God here, by his own miraculous power, laid, and hath ever since supported, these upper rooms; there being nothing but waters to support them; a fluid unstable body, incapable of supporting itself. This therefore is another work of his divine power; that the waters, which are so fluid, and unable to contain themselves within their own bounds, should yet hang in the middle of the air, and be as walls or pillars to support that region of air, which is itself another fluid body. Mr. Hervey observes very well, that in the words, Who walketh upon the wings of the wind, there is an unequalled elegance; not he flieth—he runneth, but—he walketh; and that on the very wings of the wind; on the most impetuous element, raised into the utmost rage, and sweeping along with incredible rapidity. We cannot have a more sublime idea of the Deity; serenely walking on an element of inconceivable swiftness, and, as it seems to us, uncontrollable impetuosity!