Known as the theologian's theologian, JOHN OWEN (1616-1683) was vice chancellor of Oxford University and served as advisor and chaplain to Oliver Cromwell. Among the most learned and active of the Puritans in seventeenth-century Europe, he was an erudite and accomplished theologian both in doctrine and practical theology. Kelly M. Kapic is professor of biblical and theological studies at Covenant College in Georgia. Kapic and his wife have two children. Justin Taylor (PhD candidate, The Southern Baptist Theological Seminary) is senior vice president and publisher for books at Crossway. He has edited and contributed to several books including A God-Entranced Vision of All Things and Reclaiming the Center, and he blogs at Between Two Worlds-hosted by the Gospel Coalition. John Piper (DTheol, University of Munich) is teacher and founder of desiringGod.org and chancellor of Bethlehem College and Seminary. He served for 33 years as pastor at Bethlehem Baptist Church in Minneapolis and is author of more than 50 books, including Desiring God, Don't Waste Your Life, This Momentary Marriage, Bloodlines, and Does God Desire All to Be Saved?