Blavatsky wrote in the first book of The Secret Doctrine of an analogy between the Aryan or Brahmanical and the Egyptian esotericism and that the seven rays of the Chaldean Heptakis or Iao, on the Gnostic stones represent the seven large stars of the Egyptian Great Bear constellation, the seven elemental powers, and the Hindu seven Rishis. She stated that the seven rays of the Vedic sun deity Vishnu represent the same concept as the astral fluid or 'Light' of the Kabalists, and that the seven emanations of the lower seven sephiroth are the primeval seven rays, and will be found and recognized in every religion.