'Ancient of Days' in the Bible

I was seeing even till thrones were cast down, and the Ancient of days sat, his garment white as snow, and the hair of his head as pure wool: his throne a flame of fire, his wheels a burning fire.

I was seeing in the visions of the night, and lo, with the clouds of the heavens as the Son of man he came, and turning even to the Ancient of days; and they brought him near before him.

Even till that the Ancient of days came, and the judgment was given to the holy ones of the Most High; and the time extending and the holy ones possessed the kingdom.