Persian Church by Dr. Estiphan Panoussi is a concise historical study of the Christian presence in Persia (Iran) from antiquity through the early Islamic period, with attention to its cultural, linguistic, and theological development. The document traces the origins of Persian Christianity within the Syriac-speaking world, highlighting its early missionary activity, its spread along trade and intellectual routes, and its establishment as a distinct ecclesial tradition under the Sassanian Empire.
 
The study examines the interaction between Persian Christianity and surrounding powers—Roman/Byzantine, Zoroastrian, and later Islamic—showing how the Persian Church developed its own identity under political pressure and periodic persecution. Particular emphasis is placed on the Church of the East, its theological schools (notably Nisibis), its Christological debates, and its role as a mediator of learning between East and West.
 
Panoussi also highlights the intellectual and cultural contributions of Persian Christians, including their role in translation movements, education, medicine, and the transmission of Greek philosophy and science into the Islamic world. Overall, the document presents the Persian Church as a historically resilient and culturally formative Christian tradition, integral to the broader history of Christianity in the Near East and to Iran’s religious and intellectual heritage.