J. Nelson Kraybill, Ph.D, is pastor at Prairie Street Mennonite Church in Elkhart, Indiana, and president of Mennonite World Conference. He served as president of Anabaptist Mennonite Biblical Seminary (1997–2009), and as program director at London Mennonite Centre in England (1991–96). Author of Apocalypse and Allegiance: Worship, Politics and Devotion in the Book of Revelation (Brazos, 2010), he leads tours to Israel/Palestine and blogs at www.peace-pilgrim.com. This article is adapted from his presentation at the Schrag Lectures at Messiah College in March 2015.