Though the Sassanids sought to restore the kingdom of the Achæmenids, and immortalise their own achievements beside those of the early kings, the religious revival which they undertook was far more thorough than the political. In this direction they went further than the Achæmenids; they caused the forms which the old faith of Iran had retained and forced on the East, to be current throughout the whole kingdom. Agathias assures us that Ardeshir was eagerly devoted to the study of the doctrine of the Magians, who since his accession had gained an importance such as they never enjoyed before. The business of the State was decided upon their advice and predictions; they assisted individual persons in their private matters and suits at law, and the Persians did not regard anything as legal and right which was not confirmed by a Magian.[103] At the head of the Magians, we are told in another account coming from a western source, a Grand Magian was placed under the Sassanids,[104] and as a fact the Magians now received a thorough organisation. At the head of their caste was the High Magian (_Magupat_, Mobedh); and over all the High Magians was the Grand Magian (_Magupatan magupat_); to the Magians belonged the judicial power; and the Grand Magian performed the coronation of the king. The Sassanids erected fire-temples in Persia no less than in Aderbeijan; their coins always exhibit the fire-altar, and as a rule two priests before it. They carried their genealogy beyond Sassan through Çpentodata (p. 38) to Vistaçpa of Bactria, who is now said to have established the seven princes; they call themselves by the names of the ancient heroes who met us in the Avesta; Kavadh (Kava Kavata) and Chosru (Kava Huçrava). While styling themselves the worshippers of Mazda (Auramazda) like the founders of their empire, they went so far as to assume the names of the gods of the Avesta; some even called themselves after Verethraghna (Varahran, Bahram), others Auharmazdi after Auramazda himself. The numerous Christians on the Euphrates and Tigris as well as in Armenia had to undergo severe persecutions; especially under Shapur II., Varahran V., and Yezdegerd II. (438-457 A.D.), whose viceroy declared to the Armenian Christians that the Daevas (Dews) of Ahriman had deceived them; it was not the good God who had created evil and death but the wicked spirit. Defection from the faith of Auramazda was punished with death. In the treaties of the years 422, 533, and 563 A.D. Theodosius II. and Justinian obtained the concession that the Christians in the kingdom of the Sassanids should not be compelled to conform to the rules of the Magians; they were to be at liberty to bury their dead,[105] whereas the doctrine of Zarathrustra required that the corpses should be exposed.