Ashoor Yousif is an Assyrian-Iraqi Christian who is fluent in Arabic and Assyrian in addition to his knowledge of Aramaic, Hebrew and Syriac. His teaching portfolio includes multiple universities and seminaries in Canada and the Middle East, including Tyndale University, University of Toronto, and the Arabic Baptist Theological Seminary (ABTS) in Lebanon. His interdisciplinary research focuses on the history of Middle Eastern Christianity, Christian-Muslim relations, and Islamic history, religion and culture during the early Abbasid caliphate (750–950). His doctoral thesis “Allah’s Deputy and Christ’s Apostle: The Early Abbasid Ruler in Syriac and Syro-Arabic Sources” examines the interaction of Muslim rulers and Christian clergies, and the religious and political impact of Islam on the presence and status of Christian communities within the caliphate. He has taught and lectured on various topics including the history of Middle Eastern and North African Christianity, the history of Christian-Muslim relations, Middle Eastern religions and cultures, and Islam.