Psalm 147:16-18 (NIV)
16He spreads the snow like wool and scatters the frost like ashes.
17He hurls down his hail like pebbles. Who can withstand his icy blast?
18He sends his word and melts them; he stirs up his breezes, and the waters flow
Isaiah 1:18 (NIV)
18“Come now, let us reason together,” says the Lord . “Though your sins are like scarlet, they shall be as white as snow; though they are red as crimson, they shall be like wool.