Zoroaster — known in Persian as Zarathustra — was born somewhere on the Iranian plateau, probably in the region of Bactria or Chorasmia, at a date scholars dispute intensely: the Greek tradition placed him around 6000 BCE, Parsee tradition holds c. 628 BCE, and modern philological analysis of the Gathas — the seventeen hymns attributed directly to him in the Avesta — suggests a date between 1500 and 1000 BCE, closer to the Indo-Iranian world than to the empire. He grew up a priest (zaotar) of the old polytheistic Aryan religion, performing the haoma ceremony and sacrifices to a of daevas (gods), but at the age of thirty, according to the sacred narrative, he received a shattering vision. Standing at the bank of the Daiti River at dawn, drawing water for a purity ritual, he encountered a luminous figure — Vohu Manah, Good Mind — who escorted him before Ahura Mazda, the Wise Lord. That encounter dismantled the old priestly polytheism and installed a theology unlike anything in the Indo-Iranian tradition: one supreme uncreated deity, Ahura Mazda, locked in cosmic struggle with Angra Mainyu, the Hostile Spirit, the lie personified. The old daevas were recast as demons. All of creation became the arena of this conflict, and every human being was enlisted in it by the exercise of asha — Avestan for truth and righteousness — against druj, the lie. The choice was irreversible and its consequences eternal. Zoroaster spent years wandering, preaching and being rejected. The Gathas record his anguish in raw, first-person verse: at Yasna 46.1 he asks, 'To what land shall I turn? Where shall I go to flee? I am excluded from my family and from the followers of the false ones.' Probably around the age of forty-two, he found his royal patron: the chieftain Kavi Vishtaspa, almost certainly a real eastern Iranian king, who converted along with his court after Zoroaster spent three days in theological debate with the Magi establishment. From Vishtaspa's , Zoroastrianism spread rapidly across the Iranian plateau. The Gathas themselves, preserved within the Yasna liturgy (chapters 28–34 and 43–53), are among the oldest surviving religious texts in any Indo-European language — older, probably, than the Homeric epics and roughly contemporary with the . They are dense, metrically archaic, and theologically audacious: the prophet insisting that God offers each human soul a genuine choice, that history moves toward a final renovation (Frashokereiti), and that at death each soul crosses the Chinvat Bridge and is judged. This eschatological architecture — individual judgment, bodily resurrection at the end of time, a final cosmic battle won by truth, the damned purified in a river of molten metal — migrated westward through the Babylonian captivity of the Jews in the sixth century BCE and shaped the apocalyptic traditions of late Judaism, then Christianity and Islam. The kings from Darius I onward invoked Ahura Mazda in their rock inscriptions at Bisotun and Naqsh-e Rustam; Darius's inscription at Bisotun (c. 520 BCE) names Ahura Mazda as the creator of heaven, earth, and mankind and the source of royal legitimacy. By the empire (224–651 CE), Zoroastrianism was the state religion of Persia, the Avesta had been codified from oral tradition, fire temples (Atash Behrams) burned perpetually in every major city, and the Magi wielded enormous political power. The Islamic conquests of 637–651 CE ended rule. The Zoroastrian community that survived in Iran was marginalized; a group emigrated to Gujarat in India around 936 CE and became the Parsees — the primary custodians of the tradition today, numbering roughly 70,000 in India. The sacred fire they carry traces an unbroken tradition to a flame that tradition says has burned since at least 470 CE. Nietzsche seized the prophet's name for his 1883 philosophical novel Also sprach Zarathustra precisely because Zoroaster had been the first, he argued, to place morality at the center of reality — and the first therefore who could be unmasked. Today roughly 100,000 to 200,000 Zoroastrians remain worldwide, but Zoroaster's core innovations — free will as the axis of cosmic meaning, time as a moral arc bending toward justice, individual eschatological accountability — remain embedded in the foundations of Western and Islamic civilization to a degree most people never trace back to their source.
All Figures
Founder of Zoroastrianism · Prophet of Ahura Mazda
Zoroaster
c. 1,200 BCE – 1,000 BCE
The Iranian prophet whose monotheistic vision of Ahura Mazda against Angra Mainyu planted the seeds of good and evil theology that shaped Judaism, Christianity, and Islam.
Lifetime
Date source not yet attached to this catalogue record.
Deeper Dive
Unlock Zoroaster's full archive.
Notable works, life timeline, places lived, key quotes, reading list — all 158 figures' deep dives open with Epoch+.