The Zurvanite Myth
The myth is preserved in a number of Christian sources which differ but little among themselves, and the purport of it is roughly as follows:
When nothing existed at all, neither heaven nor earth, the great god Zurvan a
lone existed, whose name means 'fate' or 'fortune'. He offered sacrifice for a thousand years that perchance he might have a son who should be called Ohrmazd and who would create heaven and earth. At the end of this period of a thousand years he began to ponder and said to himself: 'What use is this sacrifice that I am offering, and will I really have a son called Ohrmazd, or am I taking all this trouble in vain?' And no sooner had this thought occured to him then both Ohrmazd and Ahriman were conceived -Ohrmazd because of the sacrifice he had offered, and Ahriman because of his doubt. When he realized that there were two sons in the womb, he made a vow saying: 'Whichever of the two shall come to me first, him will I make king.' Ohrmazd was apprised of his father's thought and revealed it to Ahriman. When Ahriman heard this, he ripped the womb open, emerged, and advanced towards his father. Zurvan, seeing him, asked him: 'Who art thou?' And he replied: 'I am thy son, Ohrmazd.' And Zurvan said: 'My son is light and fragrant, but thou art dark and stinking.' And he wept most bitterly. And as they were talking together, Ohrmazd was born in his turn, light and fragrant; and Zurvan, seeing him, knew that it was his son Ohrmazd for whom he had offered sacrifice. Talking the barsom twigs he held in his hands with which he had been sacrificing, he gave them to Ohrmazd and said: 'Up till now it is I who have offered thee sacrifice; from now on shalt thou sacrifice to me.' But even as Zurvan handed the sacrificial twigs to Ohrmazd, Ahriman drew near and said to him :'Didst thou not vow that whichever of the sons should come to thee first, to him wouldst thou give the kingdom?' And Zurvan said to him: 'O false and wicked one, the kingdom shall be granted thee for nine thousand years, but Ohrmazd have I made a king above thee, and after nine thousand years he will reign and will do everything according to his good pleasure.' And Ohrmazd created the heavens and the earth and all things that are beautifull and good; but Ahriman created the demons and all that is evil and perverse. Ohrmazd created riches, Ahriman poverty.
This is the Zurvanite myth in its crudest form, and it is strange that this myth, which was regarded by both Christian and Manichees as being typical of the Zoroastrian religion, is mentioned only once in the whole of the Pahlavi books. This one mention occurs in a passage in the Denkart which purports to be a commentary on Yasna 30.3, the very passage in which the Prophet speaks of the Holy and Destructive Spirits as twins. Even the Sassanian theologians, ignorant though they were of the sacred tongue in which the Avesta was written, must have known that this was the only possible interpretation of the Stanza in question, for it is quite one of the clearest in the Gathas. Their resolution of the dilemma was ingenious, if disingenuous. It so happens that the Avestan word eresh occurs in this stanza; and though they knew that this word meant 'rightly' and usually so translate it, they preferred on this occasion to feign ignorance and translated it with the Pahlavi word arish, which is one of the names of the demon of envy; and so it was possible for the author of the Denkart to represent the offensive doctrine as being the invention of the demons! The whole thing is passed off as being 'a proclamation of the Demon of Envy to mankind that Ohrmazd and Ahriman were to brothers in one womb'. So was the Zurvanite heresy dismissed as being the invention of devilry.
What is rather strange, however, is that though we know of the sruggle waged by Karter against the Zandiks and of Aturpat's vindication of his own orthodoxy as against the fatalists, we have no direct reference in the Pahlavi books or elsewhere to any official condemnation of mythological Zurvanism as such. This would lead us Menok i Khrat and in Zatsparam we do still find references to Zurvan which seem to presuppose at least his co-eternity with Ohrmazd and Ahriman. Thus in the former we read that Ohrmazd fashioned his creation from his own light 'with the blessing of the Infinite Zurvan, for the Infinite Zurvan is unageing and deathless; he knows neither pain nor decay nor corruption; he has no rival, nor can he ever be put aside or deprived of his sovereignty in his proper sphere'. And again it is by the agency of Infinite Time that Ohrmazd and Ahriman enter into a solemn pact by which they limit the time in which they will do battle together for nine thousand years, this nine thousand years of warfare corresponding to the nine thousand years of earthly sovereignty allotted to Ahriman by Zurvan in the fully Zurvanite version of the myth.