This book, originally written in the Aramaic language was translated in the spring of 1964 by His Holiness, Mar Eshai Shimun XXIII, Catholicos Patriarch of the Church of the East. This work was little known since the original printed copies were mostly destroyed. This reproduction represents no changes to the original translation with the exception of spelling corrections and standardizing the protocol from English to American diction. His Holiness Mar Eshai Shimun XXIII, Catholicos Patriarch was the Supreme Head of the Church of the East, its Universal Pastor from 1920 until his assassination in 1975. Born in southern Turkey, His Holiness was raised with care, having received theological and liturgical training in the Middle East and in England at St. Augustines College and later Cambridge University. He worked tirelessly fighting for the Church and his Assyrian people. Often in danger of his life, he met with foreign diplomats and heads of states appealing to the League of Nations and later, the United Nations all the while contacting world leaders and discussing with them the Assyrian Questions. In later years, he was received throughout the Middle East by Islamic Heads of state in a most respectful and amiable of circumstances which speaks to his worldly sophistication and influence as a true leader. His Holiness was a profound scholar, an exemplary writer, a charismatic speaker and was a recognized subject matter expert in Ecclesiastical History and an authority the on History of Christianity in the Middle East and Far East. An innovative leader of the Church and Assyrian people, well schooled in both the ecclesiastical aspects of his vocation, as well as geo-political issues. Attuned to the needs of his flock and nation he mindfully navigated the tenuous landscape with uncompromising ethics, integrity and superior leadership, which were the hallmarks of his character and a truly remarkable Patriarch. His agility in managing both the secular and temporal affairs bespoke his magnificent stewardship of the Assyrian people and the Church of the East.

The present collection of twenty-five studies represents the general theme of 'continuity and change', as applied to various topics connected with the rich heritage of Syriac culture. These studies cover the period from the early third to the fourteenth centuries, with an incidental excursion into modern times. The focal areas are early Syriac Christianity and its Umwelt and the later West Syrian and East Syrian traditions. Most of the contributions deal with historical subjects, with the general theme elaborated in two different directions: first, ecclesiastical history, monasticism, hagiography and theology, and second, secular history, literature, scholarship, ideas and religions. In a more specific sense the contributions focus on patterns of cultural continuity and change, such as the influence and reception of Greek secular and theological culture and literature, developments within early and later Syriac asceticism, religious controversy, the interaction between different religious communities, and the effects of major political and social changes on the cultural and religious life of the various Syriac communities. One of the most radical political changes in the Middle East concerns the Arab conquest and the rise of Islam in the seventh century. Some authors explicitly discuss the consequences of these changes for the Christian (Syriac and Armenian) populations. The effects of these historical events on intellectual, social and economic life are some of the topics discussed in this connection. Of particular interest is the number of newly edited Syriac texts in this volume, which make available translations of Greek theological works, works resulting from the reception of pagan philosophy, and magic texts reflecting popular belief.

The so-called 'Nestorian' Church (officially known as the Apostolic Assyrian Church of the East, with its See in Baghdad) was one of the most significant Christian communities to develop east of the Roman Empire. In its heyday the Church had 8 million adherents and stretched from the Mediterranean to China. Christoph Baumer is one of the very few Westerners to have visited many of the most important Assyrian sites and has written the only comprehensive history of the Church, which now fights for survival in its country of origin, Iraq, and is almost forgotten in the West. He narrates its rich and colorful trajectory, from its apostolic beginnings to the present day, and discusses the Church's theology, christology, and uniquely vigorous spirituality. He analyzes the Church's turbulent relationship with other Christian chuches and its dialogue with neighboring world religions such as Zoroastrianism, Manichaeism, Islam, Buddhism, and Taoism. Richly illustrated with maps and over 150 full-color photographs, the book will be essential reading for those interested in a fascinating, but neglected Christian community which has profoundly shaped the history of civilization in both East and West.

Bryan Spinks is one of the world’s leading scholars in the field of liturgy and to have a comprehensive work by him on the Eucharist is a major catch for SCM. Like the author’s previous work on Baptism, this will become a standard work about the Eucharist and Eucharistic theology worldwide. The book, a study of the history and theology of the Eucharist, is the fifth volume in the SCM Studies in Worship and Liturgy series and will help to establish the series as a place for landmark books of liturgical scholarship.

Christian-Muslim Relations, a Bibliographical History 4 (CMR 4) is a history of all the known works on Christian-Muslim relations in the period 1200-1350. It comprises introductory essays and detailed entries containing descriptions, assessments and compehensive bibliographical details of individual works.

Christian Thought in the Medieval Islamicate World: ʿAbdīshōʿ of Nisibis and the Apologetic Tradition is the first monograph-length study and intellectual biography of ʿAbdīshōʿ of Nisibis (d. 1318), bishop and polymath of the Church of the East. Focusing on his works of apologetic theology, it examines the intellectual strategies he employs to justify Christianity against Muslim (and to a lesser extent Jewish) criticisms. Better known to scholars of Syriac literature as a poet, jurist, and cataloguer, ʿAbdīshōʿ wrote a considerable number of works in the Arabic language, many of which have only recently come to light. He flourished at a time when Syriac Christian writers were becoming increasingly indebted to Islamic models of intellectual production. Yet many of his writings were composed during mounting religious tensions following the official conversion of the Ilkhanate to Islam in 1295. In the midst of these challenges, ʿAbdīshōʿ negotiates a centuries-long tradition of Syriac and Arabic apologetics to remind his readers of the verity of the Christian faith. His engagement with this tradition reveals how anti-Muslim apologetics had long shaped the articulation of Christian identity in the Middle East since the emergence of Islam. Through a selective process of encyclopaedism and systematisation, ʿAbdīshōʿ navigates a vast corpus of Syriac and Arabic apologetics to create a synthesis and theological canon that remains authoritative to this day.

Islam and Christianity in Medieval Anatolia offers a comparative approach to understanding the spread of Islam and Muslim culture in medieval Anatolia. It aims to reassess work in the field since the 1971 classic by Speros Vryonis, The Decline of Hellenism in Asia Minor and the Process of Islamization which treats the process of transformation from a Byzantinist perspective. Since then, research has offered insights into individual aspects of Christian-Muslim relations, but no overview has appeared. Moreover, very few scholars of Islamic studies have examined the problem, meaning evidence in Arabic, Persian and Turkish has been somewhat neglected at the expense of Christian sources, and too little attention has been given to material culture. The essays in this volume examine the interaction between Christianity and Islam in medieval Anatolia through three distinct angles, opening with a substantial introduction by the editors to explain both the research background and the historical problem, making the work accessible to scholars from other fields. The first group of essays examines the Christian experience of living under Muslim rule, comparing their experiences in several of the major Islamic states of Anatolia between the eleventh and fifteenth centuries, especially the Seljuks and the Ottomans. The second set of essays examines encounters between Christianity and Islam in art and intellectual life. They highlight the ways in which some traditions were shared across confessional divides, suggesting the existence of a common artistic and hence cultural vocabulary. The final section focusses on the process of Islamisation, above all as seen from the Arabic, Persian and Turkish textual evidence with special attention to the role of Sufism.