Zoroastrianism Viraf Namag. All Middle Persian texts written on Zoroastrianism during this time period are considered secondary works on the religion, and not scripture. Nonetheless, these texts have a strong influence on the religion. Zoroastrianism was founded by Zoroaster (or Zarathustra), later deemed a prophet, in ancient Iran. The precise date of the founding of Zoroastrianism is uncertain. Zoroaster was born in either Northeast Iran or Southwest Afghanistan. He was born into a culture with a polytheistic religion, which included animal sacrifice and the ritual use of intoxicants, quite similar to early forms of Hinduism in India. Zoroaster's birth and early
Zoroaster 330 BCE. The Seleucid rulers who gained power following Alexander's death instituted an "Age of Alexander" as the new calendrical epoch. This did not appeal to the Zoroastrian priesthood who then attempted to establish an "Age of Zoroaster". To do so, they needed to establish when Zoroaster had lived, which they accomplished by (erroneous, some even identified Cyrus with Vishtaspa) counting back the length of successive generations, until they concluded that Zoroaster must have lived "258 years before Alexander". This estimate then re-appeared in the 9th- to 12th-century Arabic and Pahlavi texts of Zoroastrian tradition, like the 10th century Al-Masudi