““It is in the context of this mid-Sasanian era edict reported by Elishe that the myth of Zurvan as hypostatized “Time” is outlined. Another fifth century CE Armenian, Eznik of Kølb, narrates the myth in more details and with some variations. It describes Zurvan as progenitor of both Ahura Mazda and Angra Mainyu. This myth of a common progenitor seems to have been one way that Zoroastrians in the Sasanian period understood the separate origins and natures of good and evil. Although in this schema Zurvan is the source of both, he is not a creator god—that role belongs to Ahura Mazda. The Zurvanite “twinning” of Ahura Mazda and Angra Mainyu as “brothers” from a common origin is rejected as a false teaching in the Middle Persian Denkard.””
