Charles H. Spurgeon on Psalms 104:3

Who walketh upon the wings of the wind; see Ps 18:10; which is expressive of his swiftness in coming to helped assist his people in time of need; who helps, and that right early; and may very well be applied both to the first and second coming of Christ, who came leaping Upon the mountains, and skipping upon the hills, when he first came; and, when he comes a second time will be as a roe or a young hart upon the mountains of spices, So 2:8 8:14 The Targum is, "upon the swift clouds, like the wings of an eagle"; hence, perhaps, it is the heathens have a notion that Jupiter is being carried in a chariot through the air when it thunders and lightens. John Gill.