Sorath is a Demon angel who is the spirit of the Sun and whose number is 666.

Rudolf Steiner said Sorath is the Sun-Demon of Revelation, a great evil power far mightier than Lucifer and Ahriman. He predicted that after the turn of the millennium, spiritual people would be able to see the Sun- Genius, the etheric vision of Christ. In response, Sorath will foment opposition through men who are possessed by him, who have strong natures, raving tongues, destructive fury in their emotions, and faces, which outwardly appear like those of animals. They will mock that which is of a spiritual nature. The mystery of Sorath and his number 666 holds the secret of Black Magic. The power by which the Sun-Genius overcomes Sorath is the Archangel Michael, who has the key to the abyss and the chain in his hand.

See also : Six-six-six.

Source:

The Encyclopedia of Demons and Demonology – Written by Rosemary Ellen Guiley  Copyright © 2009 by Visionary Living, Inc.