David Gibson (PhD, University of Aberdeen) is minister of Trinity Church in Aberdeen, Scotland. He is a coeditor of From Heaven He Came and Sought Her, and his publications include Living Life Backward: How Ecclesiastes Teaches Us to Live in Light of the End; Radically Whole; and The Lord of Psalm 23: Jesus Our Shepherd, Companion, and Host. He is married to Angela, ... Read moreand they have four children. Jonathan Gibson (PhD, University of Cambridge) is an ordained minister in the International Presbyterian Church, United Kingdom, and associate professor of Old Testament at Westminster Theological Seminary in Philadelphia. He is a coeditor of and contributor to From Heaven He Came and Sought Her and author of Be Thou My Vision: A Liturgy for Daily Worship. Jonny and his wife, Jackie, have four children. J. I. Packer (1926–2020) served as the Board of Governors’ Professor of Theology at Regent College. He authored numerous books, including the classic bestseller Knowing God. Packer also served as general editor for the English Standard Version Bible and as theological editor for the ESV Study Bible. Sinclair B. Ferguson (PhD, University of Aberdeen) is Chancellor’s Professor of Systematic Theology at Reformed Theological Seminary and the former senior minister of the First Presbyterian Church in Columbia, South Carolina. He is the author of several books, including By Grace Alone and Lessons from the Upper Room. Sinclair and his wife, Dorothy, have four grown children. Paul Helm (MA, Worcester College) is a teaching fellow at Regent College in Vancouver. He previously taught philosophy at the University of Liverpool and was was the J. I. Packer Chair of Theology at Regent College. He also publishes online at Helm's Deep. Paul is married to Angela, and they have five children. Robert Letham (PhD, University of Aberdeen) is professor of systematic and historical theology at Union School of Theology. A Presbyterian minister with twenty-five years of pastoral experience, he is the author of books such as The Work of Christ; The Holy Trinity; and Union with Christ, and a range of articles published in encyclopedias and journals. John Piper is founder and lead teacher of desiringGod.org and chancellor of Bethlehem College & Seminary. He served for thirty-three years as a pastor at Bethlehem Baptist Church in Minneapolis, Minnesota, and is the author of more than fifty books, including Desiring God; Don’t Waste Your Life; and Providence. Thomas R. Schreiner (PhD, Fuller Theological Seminary) is the James Buchanan Harrison Professor of New Testament Interpretation and associate dean of the School of Theology at the Southern Baptist Theological Seminary. Carl R. Trueman (PhD, University of Aberdeen) is professor of biblical and religious studies at Grove City College. He is a contributing editor at First Things, an esteemed church historian, and a fellow at the Ethics and Public Policy Center. Trueman has authored or edited more than a dozen books, including Strange New World; The Rise and Triumph of the Modern Self; and Histories and Fallacies. He is a member of the Orthodox Presbyterian Church. Raymond A. Blacketer (PhD, Calvin Theological Seminary) has written several articles on Calvin and later Reformed theology and is a contributor to From Heaven He Came and Sought Her and Ruined Sinners to Reclaim. Blacketer is a scholar of the Reformation and an ordained pastor who has served congregations in Alberta, Canada, and West Michigan. He has also taught classes at both Fuller Theological Seminary and Western Theological Seminary. Lee Gatiss (PhD, University of Cambridge) is the director of Church Society and a lecturer in church history at Union School of Theology. He is chairman of The Global Anglican and on the editorial board of Studies in Puritanism and Piety. He has written and edited more than thirty books on the Bible, theology, and church history. He and his family serve at Christ Church, Cambridge in the United Kingdom. Matthew S. Harmon (PhD, Wheaton College) is professor of New Testament Studies at Grace College and Theological Seminary in Winona Lake, Indiana. He was previously on staff with Cru for eight years and is the author of numerous books, including commentaries on Galatians, Philippians, 2 Peter, and Jude. He also cohosts the Various and Sundry podcast. Matthew and his wife, Kate, live in Warsaw, Indiana, and have two sons. Michael A. G. Haykin (ThD, University of Toronto) is professor of church history and biblical spirituality at the Southern Baptist Theological Seminary and director of the Andrew Fuller Center for Baptist Studies. He has authored or edited more than twenty-five books, including Rediscovering the Church Fathers: Who They Were and How They Shaped the Church. Alec Motyer (1924–2016) served as principal of Trinity Theological College in the United Kingdom, as well as pastor of several churches in England. 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 and his wife, Karen, have five adult children. Garry Williams (DPhil, Oxford University) serves as the director of the John Owen Centre for Theological Study at London Theological Seminary in the United Kingdom, which provides theological teaching for pastors after their initial training. He is also a visiting professor of historical theology at Westminster Theological Seminary in Philadelphia, Pennsylvania. Garry and his wife, Fiona, have four children. Show Less