Daniel 7:9

I beheld, still engaged in close observation, till the thrones were cast down, by a great act of judgment, and the Ancient of Days, symbol of the eternal and majestic God, did sit, whose garment was white as snow and the hair of His head like the pure wool, both symbols of unsullied purity and holiness; His throne was like the fiery flame, flashing as though composed of a fiery mass, and His wheels as burning fire, symbolical of the fiery zeal with which the Lord punishes the transgressors, but also purifies His people and prepares them for the future glorification.