Charles H. Spurgeon on Psalms 147:16

He giveth snow like wool. There are three things considerable in snow, for which it is compared to wool. First, for the whiteness of it. Snow is white as wool; snow is so exceeding white that the whiteness of a soul cleansed by pardoning grace, in the blood of Christ, is likened unto it (Isa 1:18); and the latter part of the same verse intimates that the whiteness of snow bears resemblance to that of wool. The whiteness of snow is caused by the abundance of air and spirits that are in that pellucid body, as the naturalists speak. Any thing that is of a watery substance, being frozen or much wrought upon by cold, appears more white; and hence it is that all persons inhabiting cold climates or countries, are of a whiter complexion than they who inhabit hot. Secondly, snow is like wool for softness, 'tis pliable to the hand as a lock or fleece of wool. Thirdly, snow is like wool (which may seem strange) with respect to the warmness of it. Though snow be cold in itself, yet it is to the earth as wool, or as a woollen cloth or blanket that keeps the body warm. Snow is not warm formally, yet it is warm effectively and virtually; and therefore is it compared to wool. —Joseph Caryl.