On the Orthodox Faith (De Fide Orthodoxa)

By Leo Eusebius

On the Orthodox Faith (De Fide Orthodoxa): A Thematic Study of the Writings of St. John of Damascus

The Final Voice of the Last Great Greek Church Fathers

Standing at the crossroads between the ancient world and medieval Christianity, Saint John of Damascus (676-749) remains the most influential theologian you have never fully understood. As the last of the great Greek Church Fathers, this remarkable saint shaped Catholic doctrine for over a millennium while defending the very images that grace our churches today.

This authoritative 2025 study presents the complete theological legacy of the Damascus Doctor, from his dramatic escape from the Islamic court to his groundbreaking synthesis in the Palestinian monastery of Saint Sabas. Here you will encounter the brilliant mind that gave us the "Fount of Knowledge," the systematic masterwork that became the foundation for medieval scholasticism and influenced giants like Thomas Aquinas.

Why This Scholar Changed Everything:

Authored the definitive defense of sacred images during the brutal Iconoclastic persecution (726-843)Created the first comprehensive systematic theology that united Eastern and Western thoughtProvided the theological framework for Catholic Mariology, Trinity doctrine, and ChristologyInfluenced every major Catholic theologian from Aquinas to the Second Vatican Council

Written with meticulous attention to primary sources spanning five centuries (4th-8th), this volume reveals how John's unique position under Islamic rule granted him freedom to preserve Christian orthodoxy when Byzantine emperors sought to destroy it. His theological precision saved not only religious art but the entire Catholic understanding of incarnational theology.

Perfect for:

Catholic theologians and seminary studentsReaders of patristic literature and church historyAnyone studying the development of Christian doctrineDefenders of traditional Catholic practices and devotions

This comprehensive examination, complete with extensive bibliography and scholarly apparatus, demonstrates why John of Damascus earned the title "Doctor of the Church" and why his theological insights remain essential for understanding authentic Catholic faith in the 21st century.

The monk who saved Christianity's most cherished traditions awaits your attention. His wisdom transcends centuries to speak directly to contemporary Catholic life and belief.

• Format: Paperback
• Language: English
• ISBN: B0GPCV4VNS
• ISBN13: 9798233797149
• Release Date: February 2026
• Publisher: Leo Eusebius
• Length: 140 Pages
• Weight: 0.43 lbs.
• Dimensions: 0.3" x 6.0" x 9.0"