He giveth snow like wool - He covers the earth with snow, so that it seems to have a clothing of wool. Compare the notes at Job 37:6 : "For he saith to the snow, Be thou on the earth."
He scattereth the hoarfrost like ashes - As if ashes were strewed over the earth; or, as easily as one strews ashes.

He giveth snow like wool - Falling down in large flakes; and in this state nothing in nature has a nearer resemblance to fine white wool.
Scattereth the hoar frost like ashes - Spreading it over the whole face of nature.

He giveth snow like wool,.... For colour as white as wool; so the Targum and Kimchi: and for the manner of its falling, lightly and gently as a lock of wool; which for its thinness and fineness it also resembles. Hence the ancients used to call snow , "woolly water" (t); and Martial (u) gives it the name of "densum veilus aquarum", "a thick fleece of waters": so another poet (w) calls clouds flying fleeces of wool, to which they sometimes seem like; Pliny (x) calls it the from of the celestial waters. And it is like wool for its usefulness to the earth; for as wool covers the sheep, and clothes made of it cover men, and keep them warm; so snow filling upon the earth covers it and keeps it warm, and secures the wheat and other fruits of the earth from the injuries of the cold: and this lies among the treasures of the Lord, and he brings it out from thence, and commands it to be on the earth; and it is an useful gift of his providence, for which his name is to be praised; see Job 37:6. The Jews have a saying, as Arama observes, that one day of snow is better than five of rain. In the third year of Valens and Valentinianus, with the Atrebates (a people in the Netherlands), real wool fell from the clouds, mixed with rain (y). Several blessings of grace are signified by this figure; as pardon of sin, the justifying righteousness of Christ, and the efficacy of the word of God, Psalm 51:7;
he scattereth the hoar frost like ashes; which is the dew congealed by the intense cold of the air in the night season (z): this for its colour looks like ashes, and for its infinite number of particles may be compared to them; which are spread here and there, and everywhere; over gardens, fields, lands, herbs, plants, and trees, as if they were strewed with ashes. And to hot ashes it may be compared, because of its burning nature, shrivelling up leaves, herbs, and plants, as if burnt; hence called "pruina" in the Latin tongue (a). The manna is compared to this for its smallness, Exodus 16:14; which was typical of Christ, the hidden manna, and of the ministry of the Gospel; little, mean, and contemptible, in the eyes of carnal men; torturing and tormenting to them, as the fire that came out of the mouths of the witnesses; and is the savour of death unto death to some, while it ii the savour of life unto life to others.
(t) Eustathius in Dionys. Perieget. p. 91. (u) Epigram. l. 4. Ep. 3. (w) Aristoph. Nubes, p. 146. (x) Nat. Hist. l. 17. c. 2. (y) Orosii Hist. l. 7. c. 32. p. 131. (z) lsidor. Origin. l. 13. c. 10. (a) "Frigora nec tantum cana concreta pruina", Virgil. Georgic. l. 2. v. 376.

Like wool - Not only in colour and shape, and softness, but also in use, keeping the fruits of the earth warm. Ashes - In colour and smallness of parts, as also in its burning quality.