The renowned seer Edgar Cayce referred to the Great Pyramid and the civilization of ancient Egypt in hundreds of his readings, which he gave in trance while his body "slept." He stated that its designer was Hermes (the name later given by the Greeks to the Egyptian 'god' Thoth) and that its building was directed over a hundred-year period, 10,490 to 10,390 BC, principally by the high priest Ra-Ta.
Cayce described the activities of Ra-Ta in many of his readings. He was a man in tune with "the Creative Forces," who "received inspiration from within," and had supernatural abilities. When he was 21, living in the Caucasus mountains , Ra-Ta was told in a dream that a great cataclysm and shifting of the poles would soon occur, which would sink the continent of Atlantis and affect his own area. He was advised to move to Egypt , which would be a safe area, and this he did in 10,056 BC, along with members of his tribe and their secular leader, Arart.
Peoples from many other countries were entering the Nile Valley at the time, including émigrés from Atlantis, creating a nation of eclectic beliefs and abilities. Before the demise of Atlantis, Ra-Ta travelled there over a period of years to learn more about the Atlanteans' spiritual doctrine, the Law of One. The Atlanteans knew that destruction of their continent was approaching and made plans to store records of their civilization in Egypt . According to Edgar Cayce, the Great Pyramid was designed at this time, c. 10,500 BC:
Hence there began the first preparation for what has later become that called The Great Pyramid ... under the authority of Ra [Ra-Ta], and Hermes as the guide, or the actual ... constructing or construction architect, with the Priest or Ra giving the directions .... [reading 294-151]
Similar information naming Ra-Ta as the builder of the Pyramid has been received through two current channelers, David Wilcock and Carla Rueckert. According to some references in Cayce's readings, Ra-Ta, because of his extraordinary exploits, became memorialized as the Sun God, Ra.