Christianity had become a powerful and expanding religion in the Sasanian Empire after Zoroastrianism for 150 years following the reign of Yazdgerd. Religious minorities posed a problematic structure for society as they contained seeds of rebellion and solutions for instigating injustice. Khosrow I observed unrest and confusion during the trial of Maraba, so he rejected joining or supporting a potentially dangerous movement led by the Christian prince Anousheh Gzad. Instead, he followed the example of Constantine by converting to Christianity and refusing to persecute Christians. Competition between Zoroastrianism and Christianity led to social divisions and a deterioration of national unity in the country, weakening resistance against the Arab invasion in the