John Piper (DTheol, University of Munich) is the founder and teacher of desiringGod.org and the chancellor of Bethlehem College & Seminary. He served for 33 years as the senior pastor of Bethlehem Baptist Church in Minneapolis, Minnesota, and is the 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?
Justin Taylor (PhD, The Southern Baptist Theological Seminary) is the executive vice president of book publishing and book publisher 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.
Paul Kjoss Helseth (PhD, Marquette University) is professor of Christian thought at Northwestern College in St. Paul, Minnesota, and the author of numerous scholarly articles.
Wayne Grudem (PhD, University of Cambridge; DD, Westminster Theological Seminary) is research professor of theology and biblical studies at Phoenix Seminary, having previously taught for 20 years at Trinity Evangelical Divinity School. He is the former president of the Evangelical Theological Society, a member of the Translation Oversight Committee for the English Standard Version of the Bible, the general editor of the ESV Study Bible, and has published over 20 books.
Mark Talbot (PhD, University of Pennsylvania) is associate professor of philosophy at Wheaton College. He specializes in philosophical psychology and philosophical theology and has written numerous articles and reviews.
Bruce A. Ware (PhD, Fuller Theological Seminary) is professor of Christian theology at The Southern Baptist Theological Seminary. He has written numerous journal articles, book chapters, book reviews, and has authored God's Lesser Glory, God's Greater Glory, and Father, Son, and Holy Spirit.
Michael Horton (PhD, University of Coventry and Wycliffe Hall, Oxford) is the J. Gresham Machen Professor of Systematic Theology and Apologetics at Westminster Seminary in California. In addition to being the author of many popular and academic books, he is also the editor in chief of Modern Reformation magazine, a host of the White Horse Inn radio broadcast, and a minister in the United Reformed Churches.
Stephen J. Wellum (PhD, Trinity Evangelical Divinity School) is professor of Christian theology at the Southern Baptist Theological Seminary in Louisville, Kentucky, and editor of the Southern Baptist Journal of Theology. Stephen lives in Louisville, Kentucky, with his wife, Karen, and their five children.