Exactly where and when the symbol came into usage is unknown. Some historians claim that it must have been derived from a Forerunner glyph, though if this is so the original Forerunner symbol has remained undiscovered even by the Prophets. Others maintain that it is evidence that the First Exodus is a historically accurate, if garbled, account of the settlement of Ketesh, believing it to represent the torch carried by the Sangheili's guide to the planet, a position adopted by many modern believers. According to the legend, the Sangheili were guided from their original home by a "bringer of holy light," carrying a holy torch. The torch has since become a significant religious symbol on Ketesh, and is commonplace in most civilisations, though the Akht Eraqa is distinctive from others in its