Divine sanction was an important part of royal legitimation, and one
must therefore investigate the relations between monarchs and the Zoroastrian
priesthood, the repository of pristine mythological traditions. The
established view that the Sasanian shahs relied on the Zoroastrian priesthood’s
support, and as a consequence actively encouraged their beliefs
and enhanced their power, has been largely modified in recent decades.28
Although the term mazdesn (Mazda-worshipping) recurs frequently on
Sasanian monuments as a royal epithet, this need not imply automatic
recognition of one organised priesthood as sole exponent of this deity’s
cult. Shahs could perhaps best consolidate royal power by fostering variety,
both inside the Zoroastrian church and between different religions.
The traditional view encounters difficulties even with the dynasty’s
founder, Ardashir I. According to the Denkard – the post-Sasanian Zoroastrian
encyclopedia – Ardashir should be considered as the great restorer of
the Zoroastrian faith: it was under his aegis that the priest Tansar allegedly
collected the scattered remnants of the Avestan books, which had survived
since Alexander’s conquests.29 However, the picture that emerges from the
Res gestae divi Saporis is rather different: it makes no mention of Tansar
or any member of the Zoroastrian priesthood other than Kirder, whose
appearance is rather muted. Ardashir himself can reliably be described as
a worshipper of Anahita of Stakhr, whereas evidence of his attachment to
Ahura Mazda is more equivocal. As worshipped by the early Sasanians,
Anahita was the goddess of victory at whose shrine the severed heads of
vanquished enemies were habitually dedicated. If the devotion of Ardashir
and his immediate successors to Anahita can be considered as part and
parcel of a Zoroastrian orthodoxy, then this orthodoxy must have been
entirely different from the kind of orthodoxy assumed in his glorification
in the Denkard.30
The absence of any clear reference to an organised clergy in the Res gestae
divi Saporis is at odds with the role ascribed by modern scholars to a
‘Zoroastrian church’, at least under the early Sasanians. This gap is not
filled by the far-reaching claims made in four inscriptions celebrating the
career of Kirder, the one priestly character who does figure on Shapur’s
monument. Kirder was promoted within the Zoroastrian priesthood from
a mere herbed under Shapur I to the rank of a mobed (chief magus) under his
immediate successors,Hormizd I (270–1), Bahram I (271–4) and Bahram II
(274–93). Bahram II bestowed additional honours and supposedly authorised
Kirder to enforce Zoroastrianism and persecute heresies and other
religions. This only indicates that this shah was attached to the kind of
Zoroastrianism preached by Kirder, which is more than can be said of
Shapur I.31
The extent of Shapur I’s Zoroastrian piety as it emerges from his own Res
gestae is not entirely clear. He was indeed the founder of many fire-temples
throughout his realm, according to his own testimony as well as to Kirder’s.
Yet fire-temples were sacred not only to Ahura Mazda but also to Anahita,
and Shapur’s favourable attitude to Zoroastrianism should be conceived
in the framework of a religious eclecticism that could also accommodate
Manichaeism.32 Furthermore, the fact that he granted Kirder sweeping
powers to conduct religious affairs, without matching these powers with
the appropriate title – whatever its meaning, herbed appears to be a rather
modest rank – suggests that Kirder was more a court priest than the designated
head of a powerful church. We cannot rule out a degree of tension
between Kirder in this function and some of his brethren. Reiterated as
a refrain on his inscriptions, Kirder’s statement that under his leadership
many of the magi (not all of them) were happy and prosperous implies an
attempt to mute some opposition voices. The early Sasanian monarchs, far
from depending on an already powerful organisation for vital support, may
rather have helped Zoroastrian clergy to improve their position in a fluid
and competitive religious milieu.
It is usually assumed that under Narseh the influence of the Zoroastrian
priesthood declined, but that it regained much of the lost ground under
Shapur II. The figure of Aturpat, son of Mahrspand, looms large in post-
Sasanian Zoroastrian literature: he is depicted as a model of Zoroastrian
orthodoxy who submitted himself to the ordeal of molten metal to refute
heretics whose precise doctrine is disputed. It is natural enough to suppose
that Aturpat stood at the head of a mighty Zoroastrian hierarchy, authorised
by the shah himself to administer the institutions of the only fully
recognised official state religion.However, the hierarchy of what tends to be
conceived of as ‘the Zoroastrian church’ did not in all probability become
fully established until much later. It is only under Yazdgard II (438–57) that
the high priestMihr-Shapur, who had already distinguished himself under
previous reigns as a persecutor of Christians, is called modaban mobad,
the earliest reliable attestation of this title. But even then the relative position
of mobeds and herbeds in the organisation of Zoroastrian clergy is not
entirely clear. The title herbedan herbed, conferred upon Zurvandad, the
son of Yazdgard’s powerful prime minister, Mihr-Narseh, has been interpreted
as evidence for a hierarchy distinct from that of the mobeds within
the Zoroastrian church.
The Zoroastrian priesthood appears to have gained a truly undisputed
position as the sole representative of the one and only state religion in
the course of the fifth century. It is precisely at this time that Avestan
names suddenly proliferate among members of the royal house, and the
title kavi or kay appears on its coins, marking a crucial stage in the fabrication
of the Kayanid genealogy as a source of legitimation of the Sasanian
dynasty. Yet the Zoroastrian priesthood was soon to suffer a severe blow
under Kavad I (488–96), during the Mazdakite revolt (see below, p. 149).
The reign of Khusro I (531–79) appears to have been a period of harmony
between the monarchy and the Zoroastrian priesthood, but it was
a priesthood restored by the shah following the Mazdakite debacle, and
consequently more dependent on the shah than before. Under Khusro’s
successors, Zoroastrian influence seems to have declined. Khusro II (590–
628), rather than follow his predecessors in the large-scale establishment
of fire-temples staffed with a vast multitude of herbedan, relied heavily on
Christians, including his favourite wife, his finance officer and his chief
general (see below, p. 144); Zoroastrian tradition, as reflected in the apocalyptic
composition Jamasp namagh, branded him an unjust and tyrannical
shah.33
The figure of Mihr-Narseh, Yazdgard II’s prime minister, illustrates the
problem of Zoroastrian orthodoxy and heterodoxy in the Sasanian period.
From Armenian sources recounting the persecution he launched against
the Christians in Armenia, it is clear that Mihr-Narseh was an adherent of
Zurvanism (belief in Zurvan i Akanarag or Infinite Time).34 His son Zurvandad
bore a name celebrating this rather shadowy divine personification,
and such names seem to have been common among Iranian nobles under
the Sasanians. The role of Zurvan in the Zoroastrian pantheon is much disputed,
but it represents a trend in Zoroastrianism which sought to provide a
unifying monistic framework for its fundamentally dualist theology:Ohurmazd,
the good principle, and Ahriman, the evil principle, were depicted as
the twin sons of Infinite Time.However, there is little reliable information.
Whereas contemporary non-Sasanian and non-Zoroastrian sources suggest
that this monistic doctrine was the orthodoxy endorsed by the Sasanian
shahs, the Pahlavi Zoroastrian literature of the post-Sasanian era is virtually
silent on this.35
Various attempts have been made to explain this discrepancy. One suggestion
is that the dualist orthodoxy reflected in the surviving Zoroastrian
literature only triumphed after the collapse of the Sasanian monarchy: that
the former monistic orthodoxy was deliberately suppressed by supporters
of the old national religion, in the face of the new Islamic monotheism.36
According to another view, the story of Zurvanism is one of intermittent
success: whereas under some shahs it was indeed the accepted orthodoxy,
under others the pendulum swung in the opposite direction and the dualist
trend became dominant. Dualism was finally triumphant in the mid-sixth
century under Khusro I, whose reign also constitutes a decisive stage in the
establishment of a canon of the Zoroastrian scriptures, the Avesta, and in
the development of Zoroastrian theological literature. Attempts have also
been made to play down the significance of Zurvanism, either as a fad
entertained by the upper classes or as a popular version of Zoroastrianism:
nothing tantamount to a heresy in its familiar Christian sense.37
Perhaps the best way of approaching a solution is to get rid of the notion
of a Sasanian Zoroastrian church, analogous in its position to that of the
Christian church in the late Roman empire and intent upon using secular
support to impose a uniform doctrine within its ranks. The truth may well
have been that although the early Sasanian shahs found Zoroastrianism,
as represented and propounded by the estate of the magi, the most potent
religious factor in many of their domains, they were not always prepared
to allow it to become the sole officially dominant state religion. Thus,
for example, Anahita, who seemingly fades out after the reign of Narseh,
springs again into prominence under the last Sasanians, from Khusro II to
Yazdgard III.38
Furthermore, the fact that some Sasanian shahs, like Shapur I, were
prepared to unleash the Zoroastrian priesthood against the Christians in
the service of their own policies does not mean that they themselves subscribed
to any version of Zoroastrianism as the binding orthodoxy. Attitudes
towards this religion appear to have varied according to circumstances
and the tempers of individual rulers. A sober monarch like Shapur I was
quite capable of striking an alliance of convenience with the Zoroastrian
clergy, while keeping his options open by toying with Manichaeism. Shapur
II, a notorious persecutor of the Christians, may well have played
off dualism against Zurvanism precisely in order to check the growth of an
excessively strong, unified priestly caste. Yazdgard I was favourably inclined
towards Christianity and Judaism for most of his reign.39On the other hand,
such shahs as Bahram I and Bahram II may be described as truly pious followers
of the form of Zoroastrianism propounded by Kirder: probably, but
not certainly, dualism.
The Sasanian monarchs’ attitude towards Nestorian Christianity is
another consideration against interpreting their religious policy exclusively
in terms of their Zoroastrian piety. After this creed had been condemned
as a heresy at the council of Ephesus in 431, believers found a relatively safe
haven in the Sasanian empire. In 457, a Nestorian school was founded in
Nisibis by Bar Sauma andNarsai, fugitiveNestorian teachers fromEdessa; it
flourished there, particularly under Shah Peroz (459–84), when the Zoroastrian
priesthood appears to have been at the peak of its power. There was
no danger in a policy of toleration towards a religious sect now banned
within the Byzantine empire, whose rulers were either Chalcedonian or
inclined to monophysitism. However, even a shah such as Khusro I – who
could afford to be tolerant without marring his relations with a Zoroastrian
priesthood firmly under his control – could or would not prevent
persecution, even of Nestorians, after war against Byzantium flared up in
540. Khusro II is often described as sympathetic to the Christians, but the
picture is more complex: he astutely played off monophysites (whose cause
was advocated at court by his favourite wife, Shirin, and her influential
physician, Gabriel) against Nestorians (who found a faithful champion in
his powerful finance minister, Yazdin). Towards the end of his reign, when
his empire succumbed to a Byzantine invasion, Khusro reversed his policy
of general toleration and threatened a wave of persecutions.