Phos was the 'great and good god' worshiped by the Videssians and many of the people whose lands had been subjugated by the Empire of Videsses. The center of orthodox Phos-worship was in Videssos the City, where the Patriarch of Videssos sat. According to orthodox Videssian theology, Phos will eventually be victorious but is always in constant combat with Skotos, the source of all evil. Phos' name was originally Phaos, however a vowel shift which occurred around the time of the Avtokrator Maleinos II changed the pronunciation to the more modern Phos.