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The Keller Center

Staff & Fellows Bios

Executive Director

Collin Hansen

Executive Director

Collin Hansen serves as vice president for content and editor in chief of The Gospel Coalition, as well as executive director of The Keller Center for Cultural Apologetics. He hosts the Gospelbound podcast, writes the weekly Unseen Things newsletter, and has written and contributed to many books, including Timothy Keller: His Spiritual and Intellectual Formation and Rediscover Church: Why the Body of Christ Is Essential. He has published with the New York Times and the Washington Post and offered commentary for CNN, Fox News, NPR, BBC, ABC News, and PBS NewsHour. He edited the forthcoming The Gospel After Christendom and The New City Catechism Devotional, among other books. He is an adjunct professor at Beeson Divinity School, where he also co-chairs the advisory board.

Program Director

Michael Graham

Program Director

Michael Graham (MDiv, Reformed Theological Seminary, Orlando) is program director for The Keller Center. He is the executive producer and writer of As in Heaven and coauthor of The Great Dechurching. He is a member at Orlando Grace Church. He is married to Sara, and they have two kids.

Associate Program Director

Skyler Flowers

Associate Program Director

Skyler Flowers (MDiv, Reformed Theological Seminary) is the program director for The Carson Center for Theological Renewal and cohort director for all TGC cohorts. He serves as an elder at Grace Bible Church in Oxford, Mississippi, and is working toward his PhD in systematic theology at the University of Aberdeen. Skyler served as an editor for The Gospel After Christendom. He is married to Brianna, and they have two kids.

Content Strategist

Matt Lietzen

Content Strategist

Matt Lietzen (MDiv, Reformed Theological Seminary, DC) is the content strategist at The Keller Center. He is the pastor of Resurrection Presbyterian Church, a downtown congregation serving urban and university Madison, Wisconsin. He is married to Kelsey, and they have a daughter, Emery.

Sam Allberry

Sam Allberry is a pastor, apologist, and speaker. He is the author of 7 Myths About Singleness, Why Does God Care Who I Sleep With?, What God Has to Say About Our Bodies, and, with Ray Ortlund, You’re Not Crazy. He serves as associate pastor at Immanuel Nashville, is a canon theologian for the Anglican Church in North America, and is the cohost of TGC’s podcast You’re Not Crazy: Gospel Sanity for Young Pastors.

Sam Chan

Sam Chan (PhD, Trinity Evangelical Divinity School) is the lead mentor and trainer at EvQ School of Evangelism, a ministry of City Bible Forum. Based in Australia, he’s the author of several books including Evangelism in a Skeptical World and How to Talk About Jesus (Without Being That Guy). Sam speaks at conferences around the world on storytelling, apologetics, and the practice of evangelism in a post-Christian culture, and he blogs at Espresso Theology.

Joshua Chatraw

Joshua Chatraw is the Beeson Divinity School Billy Graham chair for evangelism and cultural engagement at Samford University. His recent books include The Augustine Way, Surprised by Doubtand Telling a Better Story. He also serves as an inaugural fellow with The Keller Center for Cultural Apologetics and a fellow at The Center for Pastor Theologians.

James Eglinton

James Eglinton is Meldrum senior lecturer in Reformed theology at the University of Edinburgh. He is the author of Bavinck: A Critical Biography. You can follow him on X.

Craig Ellis

Craig Ellis has a lifelong personal ministry engaging with secular culture in the area of public faith, and equipping other Christians to do the same. Craig has taught numerous classes on sharing the gospel in everyday conversation and responding to common objections to faith. He has also conducted lectures and discussion groups for non-Christians, including a weekly series called the West Side Cafe that was featured in The New York Times. He holds an MBA from Harvard Business School.

Rachel Gilson

Rachel Gilson (MDiv, Gordon-Conwell Theological Seminary) serves on the leadership team of theological development and culture with Cru. Her writing has appeared at Christianity Today, Desiring God, and The Gospel Coalition, and she regularly speaks at churches and on college campuses. She is the author of Parenting Without Panic in an LGBT-Affirming World and Born Again This Way. Rachel is pursuing a PhD in public theology at Southeastern Baptist Theological Seminary. She lives in the Boston area with her husband and daughter.

Alex Harris

Alex Harris is an attorney and author. Sons of homeschool pioneers, Alex and his twin brother, Brett, created The Rebelution and wrote Do Hard Things: A Teenage Rebellion Against Low Expectations as teenagers. A graduate of Harvard Law School, Alex worked as a law clerk for U.S. Supreme Court Justices Neil Gorsuch and Anthony Kennedy and was named in Forbes 30 Under 30 for law and policy. He and his family live in Denver and are members of Fellowship Denver Church.

Vanessa K. Hawkins

Vanessa K. Hawkins (MDiv, DMin) is the director of community life at Redeemer Lincoln Square in New York City. She is a Bible teacher, a conference speaker, and author of the forthcoming Justice and the Heart of God, a Bible study on the book of Amos. She serves as a fellow for The Keller Center for Cultural Apologetics. Vanessa is married to Marcus, and they have three daughters. You can follow her on Instagram.

Sarah Irving-Stonebraker

Sarah Irving-Stonebraker (PhD, Cambridge University) is associate professor of history and Western civilization at Australian Catholic University. She was a junior research fellow at Wolfson College, Oxford University. She is the author of several books, including Natural Science and the Origins of the British Empire and Priests of History: Stewarding the Past in an Ahistoric Age. Sarah and her husband, Johnathan, have three children and live in the Hawkesbury region outside of Sydney, Australia.

Timothy Paul Jones

Timothy Paul Jones (PhD, Southern Seminary; PhD candidate, Stellenbosch University) is C. Edwin Gheens professor of Christian family ministry and chair of the department of apologetics, ethics, and philosophy at The Southern Baptist Theological Seminary. He is author or editor of more than a dozen books, including Understanding Christian Apologetics, Did the Resurrection Really Happen?, and In Church as It Is in Heaven with Jamaal E. Williams. He also serves as a preaching pastor at Sojourn Church Midtown, writes at his website, and cohosts The Apologetics Podcast. Timothy and his wife, Rayann, live with their four daughters in Louisville, Kentucky.

Michael Keller

Michael Keller (MDiv, ThM, Gordon-Conwell Seminary; PhD, Vrije Universiteit Amsterdam) is the founding and senior pastor of Redeemer Presbyterian Church–Lincoln Square and a Council member of The Gospel Coalition. He also serves as a fellow for The Keller Center for Cultural Apologetics. His PhD is in computational linguistics applied to historical theology.

Michael J. Kruger

Michael J. Kruger is the Samuel C. Patterson Chancellor’s Professor of New Testament and Early Christianity at  Reformed Theological Seminary. He served as president of the Evangelical Theological Society in 2019. He is the author of Surviving Religion 101: Letters to a Christian Student on Keeping the Faith in College and Christianity at the Crossroads: How the Second Century Shaped the Future of the Church. He blogs regularly at Canon Fodder.

Matt McCullough

Matt McCullough (PhD, Vanderbilt University) is pastor of Edgefield Church in Nashville, Tennessee, and the author of The Cross of War, Remember Death, and Remember Heaven: Meditations on the World to Come for Life in the Meantime. He’s married to Lindsey, and they’re the parents of three boys.

Rebecca McLaughlin

Rebecca McLaughlin holds a PhD from Cambridge University and a theology degree from Oak Hill Seminary in London. She is the author of several books, including Confronting Christianity, The Secular Creed, Jesus Through the Eyes of Women, and Does the Bible Affirm Same-Sex Relationships?. You can follow her on X, Instagram, or her website.

Alan Noble

Alan Noble (PhD) is author of Disruptive WitnessYou Are Not Your Own, and On Getting Out of Bed and is associate professor of English at Oklahoma Baptist University.

Gavin Ortlund

Gavin Ortlund (PhD, Fuller Theological Seminary) is a pastor, author, speaker, and apologist for the Christian faith. He serves as the president of Truth Unites, visiting professor of historical theology at Phoenix Seminary, and theologian-in-residence at Immanuel Nashville. He is the author of several books, including The Art of Disagreeing, Why God Makes Sense in a World That Doesn’t, and What It Means to Be Protestant.

Vermon Pierre

Vermon Pierre (MDiv, Trinity Evangelical Divinity School) is a founding pastor and the lead pastor at Roosevelt Community Church in Phoenix, Arizona, and a Council member of The Gospel Coalition. He is the author of Gospel Shaped Living and Dearly Beloved: How God’s Love for His Church Deepens Our Love for Each Other. He is also a cohost for The Un-Silent Church podcast. He and his wife, Dennae, live in downtown Phoenix and have five children.

Keith Plummer

Keith Plummer (MDiv, PhD, Trinity Evangelical Divinity School) is dean of the School of Divinity and professor of theology at Cairn University in Langhorne, Pennsylvania. He previously served on the pastoral staff of Our Saviour Evangelical Free Church in Wheeling, Illinois. Keith is a fellow of The Keller Center for Cultural Apologetics. He is published in Scrolling Ourselves to Death: Reclaiming Life in a Digital Age, Before You Lose Your Faith: Deconstructing Doubt in the Church, and The Digital Public Square: Christian Ethics in a Technological Society. He also hosts the defragmenting podcast. He and his wife have two children.

Kori Porter

Kori Porter is the former CEO of Christian Solidarity Worldwide. She graduated from the University of Mississippi and completed her MA in theological studies with an emphasis in religion and society from Princeton Theological Seminary. She has been published in His Testimonies, My Heritage and the AND Campaign’s A New Narrative on Abortion: Pro-Woman and Pro-Child. She has 13 years of experience in campus ministry, serving most recently on the campus of Princeton University.

Derek Rishmawy

Derek Rishmawy (PhD, Trinity Evangelical Divinity School) is the Reformed University Fellowship (RUF) campus minister at University of California Irvine. He cohosts the Mere Fidelity podcast. You can follow him on X or read more at his blog.

Glen Scrivener

Glen Scrivener is an ordained Church of England minister and evangelist who preaches Christ through writing, speaking, and online media. He directs the evangelistic ministry Speak Life. Glen is originally from Australia and now he and his wife, Emma, live with their two children in England. They belong to All Souls Eastbourne. He is the author of several books, including The Air We Breathe: How We All Came to Believe in Freedom, Kindness, Progress, and Equality and 3-2-1: The Story of God, the World, and You.

John Starke

John Starke is the lead pastor at Apostles Church Uptown in Manhattan. He’s the author of The Possibility of Prayer and The Secret Place of Thunder.

Daniel Strange

Daniel Strange is director of Crosslands Forum, vice president of The Southgate Fellowship, and in theological leadership at The London Project (City to City). He is a fellow of The Keller Center for Cultural Apologetics and is the author of Their Rock Is Not like Our Rock, Plugged In, and Making Faith Magnetic. He is a contributing editor for Themelios and an elder of Hope Community Church, Gateshead, United Kingdom, which is part of the Fellowship of Evangelical Churches (FIEC).

Walter R. Strickland II

Walter R. Strickland II (PhD, University of Aberdeen) is teaching pastor at Imago Dei Church. He teaches theology at Southeastern Baptist Theological Seminary, and he cofounded Aptree Learning. Walter also serves as a Council member for The Gospel Coalition. He and his wife live in the Raleigh area in North Carolina, and they have two daughters and a son, and a daughter named Hope who is waiting to meet them in glory.

N. Gray Sutanto

N. Gray Sutanto (PhD, University of Edinburgh) is associate professor of systematic theology at Reformed Theological Seminary in Washington, DC. He is the author of A Sense of the Divine, coauthor of Neo-Calvinism: A Theological Introduction, cotranslator of Herman Bavinck’s Christian Worldview, and coeditor of Handbook to Neo-Calvinism. Gray is married to Indita, and they have a daughter. He’s an ordained minister in the International Presbyterian Church. You can follow him on X.

Bob Thune

Bob Thune (MA, Reformed Theological Seminary) is founding and lead pastor of Coram Deo Church in Omaha, Nebraska, and a Council member of The Gospel Coalition. He is the author of Gospel Eldership, coauthor of The Gospel-Centered Life and The Gospel-Centered Community, and creator of the Daily Liturgy podcast. In addition to his work as a pastor and writer, he coaches and trains church leaders and helps to lead a classical Christian school.

Jeremy Treat

Jeremy Treat (PhD, Wheaton College) is Pastor for Preaching and Vision at Reality LA in Los Angeles, CA and Professor of Theology at Biola University. He is the author of The AtonementSeek First, and The Crucified King. He is also the editor of a new version of Athanasius’s On the Incarnation (published by Samuel Morris Publications). He and his wife Tiffany live in Los Angeles with their four daughters.

Chris Watkin

Chris Watkin (PhD, University of Cambridge) is an Australian Research Council Future Fellow and associate professor in European languages at Monash University in Melbourne, Australia. He has written many books, including the award-winning Biblical Critical Theory: How the Bible’s Unfolding Story Makes Sense of Modern Life and Culture. You can follow him on X, his academic website, or his Christian resources website.

Trevin Wax

Trevin Wax is vice president of resources and marketing at the North American Mission Board and a visiting professor at Cedarville University. A former missionary to Romania, Trevin is a regular columnist at The Gospel Coalition and has contributed to The Washington Post, World, and Christianity Today. He has taught courses on mission and ministry at Wheaton College and has lectured on Christianity and culture at Oxford University. He is a founding editor of The Gospel Project, has served as publisher for the Christian Standard Bible, and is currently a fellow for The Keller Center for Cultural Apologetics. He is the author of multiple books, including The Gospel Way Catechism, The Thrill of Orthodoxy, The Multi-Directional LeaderThis Is Our Time, and Gospel Centered Teaching. His podcast is Reconstructing Faith. He and his wife, Corina, have three children. You can follow him on X or Facebook, or receive his columns via email.

Andrew Wilson

Andrew Wilson (PhD, King’s College London) is the teaching pastor at King’s Church London and a columnist for Christianity Today. He’s the author of several books, including Remaking the WorldIncomparable, and God of All Things. You can follow him on X.