Xenos Summer Institute - July 9-11, 2025

About XSI

Xenos Summer Institute is a remarkable 3-day experience with like-minded Christians who desire to follow Jesus. This conference is a chance to learn about culturally relevant topics for the church today from top Christian leaders. The Summer Institute aims to equip pastors and lay workers by providing practical tools for ministry while keeping the registration price extremely affordable. Thousands of people attend each year. You should join us!

XSI 2025 Upside Down Wisdom

Biblical Christianity often clashes with the culture we experience. This could be the wider secular culture, but it could also be various expressions of American church culture. God's way can feel backwards or upside-down. And yet, Jesus rebelled against the religious status quo of his day (cf. Matt 23), and Paul calls on us to demolish cultural strongholds (cf. 2 Cor 10:4-5). This conference will equip you to engage our culture while remaining faithful to God's Word. 

Key Speakers

Gavin Ortlund

Gavin Ortlund serves as the president of Truth Unites and theologian-in-residence at Immanuel Nashville. He has a PhD from Fuller Theological Seminary. Gavin is a fellow of The Keller Center for Cultural Apologetics and is the author of numerous books, including What It Means to Be Protestant, Why God Makes Sense in a World That Doesn't, and Theological Retrieval for Evangelicals. He and his wife, Esther, have five children. 

Related Websites: truthunites.org

John Marriott

John is a faculty affiliate of The Human Flourishing Program at Harvard University's Institute for Quantitative Social Science. He is the former Research and Program Coordinator for the Biola University Center for Christian Thought and teaches part-time in the Department of Philosophy at Talbot School of Theology. A former pastor, he holds a Ph.D. degree from The Cook School of Intercultural Studies. His dissertation focused on deconversion from Christianity to atheism. John has authored and coauthored several books, including The Anatomy of Deconversion: Keys to a Lifelong Faith in a Culture Abandoning Christianity and Set Adrift: Deconstructing What You Believe Without Sinking Your Faith. 

Related Websites: johnmarriott.org