'Ancient of Days' in the Bible

I beheld till thrones were set, and the Ancient of days did sit: his raiment was white as snow, and the hair of his head like pure wool; his throne was flames of fire, and its wheels burning fire.

I saw in the night visions, and behold, there came with the clouds of heaven one like a son of man, and he came up even to the Ancient of days, and they brought him near before him.

until the Ancient of days came, and judgment was given to the saints of the most high places; and the appointed time arrived, and the saints possessed the kingdom.