The Martyrs of Mount Ber"ain provides important evidence for enduring concerns of Christian self-definition in the framework of the Sasanian Empire, especially as represented by the Zoroastrian priesthood. The three children, Adarparwa, Mihrnarse, and Mahdukht, work to forget their education by the Magi, with whom they soon find themselves engaged in battle; and yet some key features of the narrative, especially Mihrnarse"s vision, reflect shared idioms between Christians and their Zoroastrian rivals. This rivalry was committed to writing and commemorated even after the Arab conquest, and one of these three sibling-martyrs, the sister Sultana Mahdukht, is still memorialized in both Iraq and the United States.