This article is about the doctrine of the formation of celestial bodies in Pahlavi texts. The doctrine is peculiar. It clashes not only with the accounts of the Gāϑā and the Younger Avesta but also with the general cosmology of Pahlavi literature. Nonetheless it must be authoritative since it is found in our main sources of Zoroastrian (Pahlavi) cosmogony and there does not seem to be an alternative account of the formation of celestial bodies. It thus prompts us to look for its background. This article presents and discusses the texts that contain the Pahlavi doctrine, examines its Avestan roots, and shows the influence of Presocratic cosmogonic speculations on the doctrine. Further, comparative material allows us to propose a conceptual genealogy of the basic constituents of the doctrine.

The main scheme of creation in Zoroastrian Pahlavi literature is adopted from the Young Avesta. In this scheme Ohrmazd creates the world in the manner of a skillful craftsman who conceives of the form of his product and then fashions it in matter. The number of the constituents of the world and the sequence in which they are created are already fixed in the Avesta. Pahlavi authors draw on Greek philosophical tradition to rationalise their account of the creation of the world. The article also explores some of the complications that their philosophical elaboration of the Avestan scheme occasions.