Dr. Scott Hahn, Fr. Michael Scanlan Chair in Biblical Theology, spoke to Franciscan University of Steubenville’s 2011 Defending the Faith Conference “Ambassadors for Christ” on “Abba or Allah:The Difference it Makes.” “For the last quarter of a century,” said Dr. Hahn, “I have shared a conviction with a growing number of people that Islam really does represent the single greatest force of the third millennium and also the single greatest challenge and threat to Christianity worldwide.” Dr. Hahn explains the very different conceptions of God in Islam (as Allah, Master) and in Christianity (as Abba, Father) and their consequences for life, religion, and interreligious encounters. “There’s a profound difference between slavery and sonship,” Hahn declared. “Until the sons of God outserve the slaves of God, Christianity is going to continue to dissolve.”

VIDEO: Watch a five-minute, a ten-minute, and a twenty-minute clip from this talk.