Roger E. Olson (Ph.D., Rice University) is professor of theology at George W. Truett Theological Seminary of Baylor University in Waco, Texas. He is the author of The Story of Christian Theology: Twenty Centuries of Tradition Reform, The Mosaic of Christian Belief: Twenty Centuries of Unity and Diversity and The Westminster Handbook to Evangelical Theology. Together they wrote 20th-Century Theology: God the World in a Transitional Age. Stanley J. Grenz (1950-2005) taught theology at Carey/Regent College for many years. He wrote twenty-five books, including Rediscovering the Triune God: The Trinity in Contemporary Theology, The Social God and the Relational Self: A Trinitarian Theology of the Imago Dei, The Moral Quest: Foundations of Christian Ethics, Revisioning Evangelical Theology: A Fresh Agenda for the 21st Century and The Millennial Maze: Sorting Out Evangelical Options (IVP).