July 12 - July 16, 2026
Christian rebirth involves a complete renewal of a person’s identity. One of the major tensions for those born of the Spirit consists in living as a new creation in a fallen world. During times of cultural crisis in particular, the temptation is to call for recovery efforts of various kinds—concerted efforts to "take back" what has been lost. God’s people are in the unique position of speaking a prophetic word to such ambitions. We are not called to conquer or vanquish the world, but to overcome it for Christ’s sake:
For everyone who has been born of God overcomes the world. And this is the victory that has overcome the world—our faith. Who is it that overcomes the world except the one who believes that Jesus is the Son of God? (1 John 5:4-5)
Join us this summer for a week of rich teaching, spiritual renewal, and Christ-centered fellowship.
The C.S. Lewis Institute Summer Academy is designed for men and women who long to grow deeper in their faith, strengthen their ability to think clearly about today’s pressing cultural questions, and deepen their devotion to Jesus in every area of life.
Hosted in an environment that encourages reflection, community, and worship, the Summer Academy brings together world-class teachers and thoughtful believers to pursue God together.
Throughout the week, participants will engage in daily Bible teaching, interactive seminars, and evening conversations shaped by Scripture and rooted in historic Christian wisdom. The Summer Academy will emphasize the integration of heart and mind, cultivating both spiritual formation and theological depth.
Whether you are a new disciple of Jesus or you have walked with Christ for decades, the Summer Academy offers a space to be encouraged, equipped, and challenged. In addition to teaching, the Academy provides intentional community: shared meals, prayer opportunities, and unhurried time for fellowship and reflection. These rhythms create an environment where friendships can form naturally, and lasting spiritual growth can take root. This is an all too rare opportunity to step away from the noise of daily life and focus wholly on what matters most—knowing God and becoming like Him.
Teachers scheduled to speak at the Summer Academy include Jerry Root, Kevin Vanhoozer, Andy Bannister, Stuart McAllister, Matthew Milliner, Sylvie Vanhoozer, Stuart McAlpine, Cameron McAllister, Nathan Rittenhouse, and more.
We invite you to join us for this transformative week. Come learn, rest, ask hard questions, and rediscover the joy and certainty of life in Christ.
When: Sunday, July 12 at 2:30 pm CT to Thursday, July 16 at 12:00 pm CT
Where: University of Saint Mary of the Lake, Conference Center | 1000 E Maple Ave, Mundelein, IL 60060
Registration Options:
- A non-refundable deposit of $500, along with a completed registration form due to hold your spot.
- Single Occupancy = $1,449 (per person)
- Double Occupancy = $1,373 (per person)
- Must be of the same gender
- Married Couple=$2746 (per couple)
- Commuter=$1099 (per person)
Final balance due by May 1, 2026
Space is limited. Register today to reserve your spot for this year’s Summer Academy!
Meet our Speakers:
Andy Bannister
Author and SpeakerAndy Bannister is an author, speaker, and broadcaster. He is currently the Director of the Solas Center for Public Christianity, an evangelism and training ministry, as well as the Adjunct Research Fellow at Arthur Jeffery Centre for the Study of Islam at Melbourne School of Theology. He holds a PhD in Islamic Studies and has taught extensively at universities across the world on both Islam and Philosophy. Andy speaks regularly on Christianity to audiences of all faiths across Europe, Canada, the US, and further afield. He is an author of several books including: The Atheist Who Didn't Exist, Do Muslims and Christians Worship the Same God? and most recently, How to Talk About Jesus Without Looking Like an Idiot.
Cameron McAllister
Director of Apologetics, CSLICameron McAllister is Director of Apologetics for the C.S. Lewis Institute. He is also a content director for Reflections Ministries. He cofounded Thinking Out Loud, where he’s a speaker, writer and one half of the Thinking Out Loud podcast, a weekly podcast about current events and Christian hope. He and his father co-authored Faith That Lasts: A Father and Son on Cultivating Lifelong Belief. A staff writer with Christ & Pop Culture, Cameron’s writing has appeared in Christianity Today, Relevant Magazine, Think Christian, and Fathom Magazine. He holds a master’s degree in apologetics from Houston Baptist University. Cameron and his wife Heather live in the Atlanta area with their two children.
Stuart McAllister
ApologistStuart McAllister is an itinerant speaker and writer. Since becoming a Christian in his home country of Scotland in 1977, he has traveled the globe, first smuggling bibles and other Christian resources behind the Iron Curtain. Throughout almost forty-five years of ministry, he has spoken to business groups, medical professionals, and government and community leaders. He has been a frequent contributor to many publications over the years. He has contributed chapters in the books Beyond Opinion (Thomas Nelson, 2007) and Global Missiology for the 21st Century (World Evangelical Fellowship, 2000). He and his son, Cameron, have co- written a book, Faith That Lasts: A Father and Son on Cultivating Lifelong Belief , which was published in 2021.
Matthew Millner
ProfessorMatthew Milliner is Senior Fellow of the Oxford Interfaith Forum, UK, and Professor of Art History at Wheaton College, USA. He holds an M.A. & Ph.D. in art history from Princeton University, and an M.Div from Princeton Theological Seminary. He is a six-time appointee to the Curatorial Advisory Board of the United States Senate, and has written for publications ranging from The New York Times to First Things. He was awarded a Commonwealth fellowship at the Institute for Advanced Studies in Culture at the University of Virginia, and is author most recently of The Everlasting People: G.K. Chesterton and the First Nations (InterVarsity Press, 2021), and Mother of the Lamb: The Story of a Global Icon (Fortress Press, 2022).
Nathan Rittenhouse
SpeakerNathan Rittenhouse is a preacher and speaker in the field of Christian apologetics at churches, campuses, and conferences. He received a degree in Physics and Philosophy with a minor in Math. Nathan has studied theology and pastoral studies in several institutions and holds an M.Div. from Gordon Conwell Theological Seminary. He is the Co-Founder of Thinking Out Loud. Nathan, his wife, and children enjoy the great outdoors and are grateful for the wisdom, support, and opportunities to serve and grow in their local church.
Thomas A. Tarrants
Author, President Emeritus, CSLI Thomas A. Tarrants is President Emeritus of the C.S. Lewis Institute. After serving twelve years as president and nine years as vice President, he retired from his position as Vice President for Ministry and Director, Washington Area Fellows Program, with CSLI in June 2019. He holds a Master's of Divinity Degree, as well as a Doctor of Ministry Degree in Christian Spirituality. Tom is an ordained minister in the Evangelical Church Alliance and a member of the Evangelical Theological Society. He spends his time writing, mentoring, consulting and traveling. His life story is told in Consumed by Hate, Redeemed by Love, published by Thomas Nelson Publishers.
Sylvie Vanhoozer
Artist and AuthorSylvie Vanhoozer was born and raised in Provence, France. A certified botanic artist, she currently focuses her attention on her writing and art, partly inspired by the places in which she has lived. She is the author of The Art of Living in Season: A Year of Reflections for Everyday Saints and The Art of Living in Advent: 28 Days of Joyful Waiting. She and her husband, Kevin, live in the Chicago suburbs and have two adult daughters and one son-in-law.
Kevin J. Vanhoozer
Professor, Senior Fellow for Systematic Theology, CSLIKevin J. Vanhoozer is the Research Professor of Systematic Theology at Trinity Evangelical Divinity School; serves on the editorial board of the International Journal of Systematic Theology and the Journal of Theological Interpretation. He earned his M.Div. from Westminster Theological Seminary and a Ph.D. from Cambridge University. Previously, he served as Blanchard Professor of Theology at Wheaton College and as Senior Lecturer in Theology and Religious Studies at New College, University of Edinburgh. He has edited multiple books, including The Cambridge Companion to Postmodern Theology and Dictionary for Theological Interpretation of the Bible. He is the author of many books, most notably, Is There a Meaning in this Text? and The Drama of Doctrine: A Canonical-Linguistic Approach to Christian Theology.
Karl “KJ” Johnson
CSLI City Director, ChicagoKarl "KJ" Johnson, Lt.Col., USMC (Ret.) is the Director of the C.S. Lewis Institute in Chicago where he oversees programs that foster the discipleship of heart and mind. He’s been a C.S. Lewis Fellow since 2008 and holds a Masters in Military Studies (Marine Corps University) and two Masters of Arts from Trinity Evangelical Divinity School (Systematic Theology and Philosophy of Religion). KJ retired after 20 years in the Marine Corps where he served as a helicopter pilot, operations officer, and weapons and tactics instructor. He’s a veteran of numerous deployments as well as multiple humanitarian assistance/disaster relief missions—most notably Operation Unified Assistance (2004 tsunami) where he served as the Air Mission Commander for former Presidents George H.W. Bush and William J. Clinton.
Speakers

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C.S. Lewis Institute, in the legacy of C.S. Lewis, works to develop wholehearted disciples of Jesus Christ who will articulate, defend, share, and live their faith in personal and public life. Founded in 1976 by Dr. James Houston and James R. Hiskey, the Institute provides leading teachers who address important issues of the day from the perspective of Biblical orthodoxy, while also providing discipleship for individuals in small groups.