Charles thinks that in this passage the idea of resurrection is of purely Jewish and not of Mazdaan (or Zoroastrian) origin, but it is otherwise with Dan.
So soon as the point of view is clear - that in the Gathas we have firm historical ground on which Zoroaster and his surroundings may rest, that here we have the beginnings of the Zoroastrian religion - then it becomes impossible to answer otherwise than affirmatively every general question as to the historical character of Zoroaster.
It is very odd that modern authors have considered this proclamation as inconsistent with the Zoroastrian creed.
They succumbed to the Persian dynasty of the Sassanids, who ruled successfully for about four centuries, established the Zoroastrian faith as their state religion, and maintained a creditable conflict with the East Roman empire.
Modern authors have often supposed that Cyrus and his ancestors were in reality Elamites; but this is contrary to all tradition, and there can be no doubt that Cyrus was a genuine Persian and a true believer in the Zoroastrian religion.