John Marriott

John is a faculty affiliate at Harvard University's Human Flourishing Program. He is the former Research and Program Coordinator for the Biola University Center for Christian Thought. 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. He is the author of five books on deconversion, A Recipe For Disaster: How the Church Contributes to the Deconversion Crisis (Wipf & Stock, 2018), The Anatomy of Deconversion: Keys to a Lifelong Faith in a Culture Abandoning Christianity (ACUP, 2021), Going... Going... Gone..! Why Believers Lose Their Faith and What Can be Done to Guard Against it (Renaissance Publishers, 2020), Before You Go: Uncovering Hidden Factors in Faith Loss (Leafwood Publishers, 2022), and Set Adrift: Deconstructing What You Believe Without Sinking Your Faith (Zondervan, 2023). John is also a contributor to an updated edition of the forthcoming book Apologetics for a New Generation (Harvest House 2025). ​ John is the Director of Cultural Engagement with the Renaissance Forum which focuses on connecting calling to culture for societal wellbeing. He enjoys speaking at churches and conferences on topics related to biblical studies, philosophy of religion, deconversion, and the relationship between the Church and culture.