Mere Christianity by CS Lewis: An Invitation to a 10-Week Study

2 days ago
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Updated: 16 hours ago

If you could sit down with one book (outside of the Bible) that has the power to completely reshape how you view right and wrong, the universe, the Trinity, and your own hidden character, what would it be?

For myself and millions of people over the last eighty years, that book is Mere Christianity by C.S. Lewis.

Originally delivered as a series of live radio broadcasts during the dark, bomb-sheltered days of World War II, Lewis’s words were meant to provide a war-torn world with an anchor. He wasn't interested in defending specific church politics or denominational turf wars. He wanted to look at the bedrock. He wanted to uncover the common-ground faith shared by historic Christians since the very beginning, what he famously termed "mere" Christianity.

Over the next ten weeks, we are launching a comprehensive, week-by-week blog series breaking down this masterpiece. Whether you are a lifelong believer looking to sharpen your theology, a skeptic wrestling with the concept of God, or someone running a small group study of your own, this series is designed for you.

What is Mere Christianity by CS Lewis About?

We live in a culture that is deeply divided, loud, and often spiritually exhausted. We argue constantly about justice, morality, and human rights, yet we rarely stop to ask: Where do these standards actually come from?

Lewis doesn't start with floating theological theories. He starts on the sidewalk. He starts with why human beings argue, why we make excuses when we get caught being selfish, and why our internal moral "compass" points the way it does. From there, he systematically builds a bulletproof map that leads straight to the heart of a Three-Personal God who wants to completely transform our nature.

Free Mere Christianity Study Guide: The 10-Week Schedule

To give you a bird's-eye view of where we are heading, here is the official breakdown of the series:

Phase 1: The Moral Argument

Week 1: Foundations & First Glimpse of the Moral Law (Preface & Book 1, Chapters 1-2)
Week 2: Completing the Moral Argument: From Law to Need (Book 1, Chapters 3-5)

Phase 2: The Core Beliefs

Week 3: What Christians Don’t Believe (Book 2, Chapters 1-3)
Week 4: What Christians Do Believe (Book 2, Chapters 4-5)

Phase 3: Christian Behavior & Character

Week 5: Christian Behavior: Morality and Virtues (Book 3, Chapters 1-4)
Week 6: Christian Behavior: The Battles of the Self (Book 3, Chapters 5-8)
Week 7: Christian Behavior: The Higher Ambitions (Book 3, Chapters 9-12)

Phase 4: Deep Theology & The New Man

Week 8: The Blueprint: First Steps in the Doctrine of the Trinity (Book 4, Chapters 1-3)
Week 9: The Transformation: The Great Invasion (Book 4, Chapters 4-7)
Week 10: The Result: The Ultimate Finish (Book 4, Chapters 8-11)

How to Get the Most Out of This Series

This isn't just a series to skim while scrolling through your phone. It’s an invitation to think deeply. Here is how you can jump in with both feet!

Grab the Book: Dust off your copy of Mere Christianity or pick one up.
Get the Weekly Handout: At the end of each blog post, I will provide the digital handout containing the reflection and discussion questions for the upcoming week.
Join the Live Streams: Every Tuesday starting June 30th at 7:00 PM MST on my YouTube and TikTok channels, I’ll be going live to review the discussion questions together, dig into your feedback, and unpack the handouts! Links are below, or search @BibleN3rd
Engage in the Comments: Use the comment section to submit your thoughts, reflections, or burning questions for review.