Christopher Ash is writer in residence at Tyndale House in Cambridge and a full-time preacher, speaker, and writer. He previously served as the director of the Proclamation Trust's Cornhill Training Course and as a minister and church planter. He and his wife, Carolyn, are members of St. Andrew the Great Church in Cambridge, and have four children and seven grandchildren.Alistair Begg serves as the senior pastor of Parkside Church near Cleveland, Ohio. He has been in pastoral ministry since 1975 and served eight years in Scotland at both Charlotte Chapel in Edinburgh and Hamilton Baptist Church. He has written several books and is heard daily on the radio program Truth For Life. He and his wife, Susan, have three grown children.Jon Bloom (BA, Bethel University) is the cofounder and president of desiringGod.org, where he contributes regularly. He is also the author of several books. Bloom and his wife, Pam, live in Minneapolis with their five children.Mike Bullmore (PhD, Northwestern University) serves as the senior pastor of Crossway Community Church in Bristol, Wisconsin. He was formerly professor of homiletics/practical theology and department chair at Trinity Evangelical Divinity School in Deerfield, Illinois. Mike lives in Kenosha, Wisconsin, with his wife, Beverly. They have three children.Bryan Chapell is the author of several books, including Christ-centered Preaching and Holiness by Grace. He is pastor emeritus of the historic Grace Presbyterian Church in Peoria, Illinois, and president emeritus of Covenant Theological Seminary, and currently serves as president of Unlimited Grace Media, which broadcasts daily in many nations. He currently leads the administrative committee of the Presbyterian Church in America. Sam Crabtree is a pastor at Bethlehem Baptist Church in Minneapolis, Minnesota, where he has served for over twenty years. He is a former public-school teacher, is the chairman of the board of Bethlehem College & Seminary, and is the author of Practicing Affirmation. Sam and his wife, Vicki, live in Minneapolis, Minnesota, and have two daughters and six grandchildren.Dan Doriani (PhD, Westminster Theological Seminary) serves as the vice president of strategic academic projects and professor of theology at Covenant Seminary. He previously served as the senior pastor of Central Presbyterian Church in Clayton, Missouri, and has been involved in several planning and study committees at the presbytery level in both the Presbyterian Church in America (PCA) and the Evangelical Presbyterian Church (EPC). Dan lives with his wife, Debbie, in Chesterfield, Missouri, and has three grown daughters.Greg Gilbert (MDiv, The Southern Baptist Theological Seminary) is senior pastor at Third Avenue Baptist Church in Louisville, Kentucky. He is the author of What Is the Gospel?, James: A 12-Week Study, and Who Is Jesus?, and is the co-author (with Kevin DeYoung) of What Is the Mission of the Church?Graeme Goldsworthy (PhD, Union Theological Seminary) previously served as a lecturer in biblical theology, Old Testament, and hermeneutics at Moore Theological College in Sydney, Australia. Graeme lives in Brisbane, Australia, with his wife, Miriam. They have four adult children.James M. Hamilton Jr. (PhD, The Southern Baptist Theological Seminary) is professor of biblical theology at the Southern Baptist Theological Seminary and preaching pastor at Kenwood Baptist Church.John D. Hannah (PhD, University of Texas at Dallas) is research professor of theological studies and distinguished professor of historical theology at Dallas Theological Seminary. He is a frequent church and conference speaker both at home and abroad. He remains active in church ministries and serves on the boards of several organizations.Justin S. Holcomb (PhD, Emory University) is an Episcopal priest and teaches theology at Reformed Theological Seminary, Orlando. He serves on the boards of GRACE (Godly Response to Abuse in Christian Environments) and REST (Real Escape from the Sex Trade). Justin and his wife, Lindsey, live in Orlando, Florida, with their two daughters.Paul R. House (PhD, The Southern Baptist Theological Seminary) serves as professor of divinity at Beeson Divinity School in Birmingham, Alabama. He has been a pastor or teacher in churches, Christian colleges, and seminaries for over thirty years. He is a past president of the Evangelical Theological Society, an active member of the Society of Biblical Literature, and a member of the Translation Oversight Committee for the English Standard Version Bible. House is the author of numerous books, including Bonhoeffer's Seminary Vision.R. Kent Hughes (DMin, Trinity Evangelical Divinity School) is senior pastor emeritus of College Church in Wheaton, Illinois, and former professor of practical theology at Westminster Theological Seminary in Philadelphia, Pennsylvania. Hughes is also a founder of the Charles Simeon Trust, which conducts expository preaching conferences throughout North America and worldwide. He serves as the series editor for the Preaching the Word commentary series and is the author or coauthor of many books. He and his wife, Barbara, live in Wyncote, Pennsylvania, and have four children and an ever-increasing number of grandchildren.Ryan Kelly (PhD, Vrije Universiteit Amsterdam) is the pastor for preaching at Desert Springs Church in Albuquerque, New Mexico, and serves as a council member for the Gospel Coalition. Ryan and his wife, Sarah, have four children.Dave Kraft served with the Navigators for thirty-seven years and currently runs his own coaching practice. He and his wife, Susan, have four adult children and seven grandchildren. More about Dave can be found at DaveKraft.org.Jason C. Meyer (PhD, The Southern Baptist Theological Seminary) is pastor for preaching and vision at Bethlehem Baptist Church and associate professor of New Testament at Bethlehem College and Seminary. Prior to coming to Bethlehem, he served as dean of chapel and assistant professor of Christian Studies at Louisiana College. He is the author of Preaching: A Biblical Theology and a commentary on Philippians in the ESV Expository Commentary.Paul E. Miller (MDiv, Biblical Seminary) is the executive director of seeJesus as well as the best-selling author of A Praying Life and several other books. With the help of his ministry staff, Miller creates and conducts interactive discipleship seminars throughout the world. He and his wife, Jill, live in the Philadelphia area and have six children as well as a growing number of grandchildren.Andrew David Naselli (PhD, Bob Jones University; PhD, Trinity Evangelical Divinity School) is associate professor of systematic theology and New Testament at Bethlehem College & Seminary in Minneapolis and one of the pastors of Bethlehem Baptist Church.Tom Nelson (DMin, Trinity Evangelical Divinity School) has served as senior pastor of Christ Community Church in Leawood, Kansas, for more than twenty years. He is the author of Five Smooth Stones and Ekklesia as well as a member of The Gospel Coalition. Douglas Sean O'Donnell (PhD, University of Aberdeen) is the Senior VP of Bible Publishing at Crossway. He is the author and editor of over a dozen books, including The Beginning and End of Wisdom; The Pastor's Book; The Song of Solomon and Matthew in the Preaching the Word commentary series; and Psalms in the Knowing the Bible series. He also contributed Job and Song of Songs in the ESV Expository Commentary.Robert L. Plummer (PhD, The Southern Baptist Theological Seminary) is professor of New Testament interpretation at the Southern Baptist Theological Seminary and host of the popular screencast DailyDoseOfGreek.com. He has authored, coauthored, or edited numerous books, including 40 Questions About Interpreting the Bible; Greek for Life: Strategies for Learning, Retaining, and Reviving New Testament Greek; and Held in Honor: Wisdom for Your Marriage from Voices of the Past.Michael Reeves (PhD, King's College, London) is president and professor of theology at Union School of Theology in Bridgend and Oxford, United Kingdom. He is the author of Delighting in the Trinity; Rejoicing in Christ; and The Unquenchable Flame.Philip Graham Ryken (DPhil, University of Oxford) is the eighth president of Wheaton College. He preached at Philadelphia's Tenth Presbyterian Church from 1995 until his appointment at Wheaton in 2010. Ryken has published more than 50 books, including When Trouble Comes and expository commentaries on Exodus, Ecclesiastes, and Jeremiah. He serves as a board member for the Council of Christian Colleges and Universities, the Lausanne Movement, and the National Association of Evangelicals.Jay Sklar (PhD, University of Gloucestershire) is professor of Old Testament at Covenant Theological Seminary.COLIN S. SMITH is the senior pastor of The Orchard Evangelical Free Church in Arlington Heights, IL, where he has been since 1996. He is the author of The 10 Greatest Struggles of Your Life and can be heard on his Unlocking the Bible broadcast with Moody radio.Sam Storms (PhD, University of Texas at Dallas) has spent more than four decades in ministry as a pastor, professor, and author. He is currently the senior pastor at Bridgeway Church in Oklahoma City, Oklahoma, and was previously a visiting associate professor of theology at Wheaton College from 2000 to 2004. He is the founder of Enjoying God Ministries and blogs regularly at SamStorms.com.Brian J. Tabb (PhD, London School of Theology) is academic dean and associate professor of biblical studies at Bethlehem College & Seminary. He is general editor of Themelios and the author of All Things New and Suffering in Ancient Worldview. He also serves as an elder at Bethlehem Baptist Church in Minneapolis. Brian lives with his wife, Kristin, and their four children in St. Paul.Erik Thoennes (PhD, Trinity Evangelical Divinity School) is professor and department chair of biblical and theological studies at Biola University and a pastor at Grace Evangelical Free Church in La Mirada, California. Previously he taught at Wheaton College and Trinity Evangelical Divinity School. He is the author of numerous articles and several books. Erik lives with his wife, Donna, and their four children.Joe Thorn (MDiv, The Southern Baptist Theological Seminary) is the founding and lead pastor of Redeemer Fellowship in St. Charles, Illinois. He is an active blogger at JoeThorn.net, a contributor to The Story ESV Bible and The Mission of God Study Bible, and the author of Note to Self: The Discipline of Preaching to Yourself and Experiencing the Trinity: The Grace of God for the People of God. He and his wife, Jen, have four children.Stephen Um (PhD, University of St. Andrews) serves as the senior minister of Citylife Church in Boston, Massachusetts. He also serves as a council member for the Gospel Coalition. Stephen lives in Boston, Massachusetts, with his wife, Kathleen, and their three daughters.Miles V. Van Pelt (PhD, The Southern Baptist Theological Seminary) is the Alan Belcher Professor of Old Testament and Biblical Languages, academic dean, and director of the Summer Institute for Biblical Languages at Reformed Theological Seminary, Jackson. He also serves on the pastoral staff of Grace Reformed Church in Madison, Mississippi. He and his wife, Laurie, have four children.Jared C. Wilson is assistant professor of pastoral ministry at Midwestern Baptist Theological Seminary and director of the Pastoral Training Center at Liberty Baptist Church in Kansas City, Missouri. He is a popular author and conference speaker, and also blogs regularly at Gospel Driven Church, hosted by the Gospel Coalition. His books include Gospel Wakefulness; The Storytelling God; and The Wonder-Working God.Todd Wilson (PhD, Cambridge University) is the cofounder and president of the Center for Pastor Theologians, a ministry dedicated to resourcing pastor theologians. He is the author of several books, including The Pastor Theologian. Todd and his wife, Katie, have seven children.Bob Yarbrough (PhD, University of Aberdeen, Scotland) is professor of New Testament at Covenant Theological Seminary in St. Louis, Missouri. He was previously professor of New Testament and department chair at Trinity Evangelical Divinity School. He is the author or coauthor of several books and is active in pastoral training in Africa.Thabiti M. Anyabwile (MS, North Carolina State University) serves as a pastor at Anacostia River Church in Washington, DC, and is the author of numerous books. He serves as a council member of the Gospel Coalition, is a lead writer for 9Marks Ministries, and regularly blogs at The Front Porch and Pure Church. He and his wife, Kristie, have three children.Dave Harvey (DMin, Westminster Theological Seminary) is the president of Great Commission Collective, a church-planting ministry. Dave pastored for thirty-three years, founded AmICalled.com, and travels widely across networks and denominations as a popular conference speaker. He is the author of When Sinners Say "I Do"; I Still Do!; Am I Called?; and Rescuing Ambition; and coauthor of Letting Go. Dave and his wife, Kimm, live in southwest Florida. He also writes at RevDaveHarvey.com, and you can follow him on Twitter.Kelly M. Kapic (PhD, King's College, University of London) is professor of theological studies at Covenant College, where he has taught for over fifteen years. Kapic has written and edited over ten books, focusing on the areas of systematic, historical, and practical theology. Kapic has also published articles in various journals and books. Kapic and his wife, Tabitha, live on Lookout Mountain with their two children.Raymond C. Ortlund Jr. is the president of Renewal Ministries and pastor to pastors at Immanuel Church, Nashville. He is also the author of several books, including the Preaching the Word commentaries on Isaiah and Proverbs and Marriage and the Mystery of the Gospel. He is also a contributor to the ESV Study Bible. Ray and his wife, Jani, have been married for fifty years.C. Michael Patton (ThM, Dallas Theological Seminary) is president of Reclaiming the Mind Ministries. In addition to serving under Chuck Swindoll for six years at Stonebriar Community Church, he is a fellow at the Credo House of Theology in Edmond, Oklahoma, developer of The Theology Program, and host of the popular podcast Theology Unplugged. Patton and his wife have four children.David Powlison (1949-2019) was a teacher, a counselor, and the executive director of the Christian Counseling & Educational Foundation. He received his PhD from the University of Pennsylvania and was also the senior editor of the Journal of Biblical Counseling. He wrote a number of books, including How Does Sanctification Work?; Making All Things New; and God's Grace in Your Suffering.Tim Savage (PhD, University of Cambridge; ThM, Dallas Theological Seminary) is a pastor, author, international conference speaker, and founding council member of the Gospel Coalition. He has served in churches in Arizona, Great Britain, and Texas. He is married to Lesli and they have two adult sons, Matthew and Jonathan. Tim is the author of No Ordinary Marriage and Discovering the Good Life.Edward T. Welch (PhD, University of Utah) is a counselor and faculty member at the Christian Counseling & Educational Foundation. He has been counseling for more than 35 years and has written extensively on the topics of depression, fear, and addictions. His books include When People Are Big and God Is Small, Crossroads: A Step-by-Step Guide Away From Addiction, Running Scared: Fear, Worry and the God of Rest, Shame Interrupted, and Side by Side. He blogs regularly at CCEF.org.