This religious development was most strongly influenced by the fact that, meanwhile, a powerful opponent of Zoroastrianism had arisen with an equally zealous propagandism and an Relation equal exclusiveness and intolerance.
Abdallah, was converted from Zoroastrianism to Islam.
In the West, among the Medes and Persians, the guardianship Th and ministry of Zoroastrianism is vested in an exclusive e priesthoodthe Magians.
There can be no doubt that at this time the true form of Zoroastrianism and the sacred writings were preserved only in Persis, whereas everywhere else (in Parthia, in the Indo-Scythian kingdoms of the east and in the great propagandist movement in Armenia, Syria and Asia Minor, where it developed into Mithraism) it degenerated and was mixed with other cults and ideas.
The period of syncretism has fully come, and Zoroastrianism in particular, more indirectly than directly, is exercising an attractive power upon the Jews.
So in Zoroastrianism the dualism is not ultimate, for Ahriman and Ormuzd are represented as the twin sons of Zervana Akarana, i.e.
Defection from Zoroastrianism was punished with death, and therefore also the proselytizing of the Christians, though the Syrian martyrologies prove that the kings frequently ignored these proceedings so long as it was at all possible to do so.