The oracles of Delphi were messengers of the gods and goddesses who spoke truth and the wisdom of the law to the ancients.
Hilarion was high priest of the Temple of Truth on Atlantis, who transported the flame of Truth together with the artifacts of the Temple to Greece a short time before the sinking of the continent. The focus of Truth that he established became the focal point for the Oracles of Delphi, who served under the direction of Pallas Athena for hundreds of years, until black priests penetrated the Delphic Order and perverted the Truth that had been brought forth. The Brotherhood then withdrew this service to embodied mankind, since people were unable to distinguish between Truth and error.
Elizabeth Clare Prophet, The Great White Brotherhood in the Culture, History and Religion of America, chapter 12.
Mark L. Prophet and Elizabeth Clare Prophet, The Masters and Their Retreats, s.v. “Hilarion.”