The Cost of Discipleship by Dietrich Bonhoeffer

Summary

Written in the Shadow of Evil

You cannot separate The Cost of Discipleship from the man who wrote it. Dietrich Bonhoeffer was a German pastor and theologian who watched his country descend into the darkness of Nazism. While most of the German church either capitulated to or actively supported Hitler's regime, Bonhoeffer stood against it — and it cost him everything. He was arrested, imprisoned, and executed by hanging at the Flossenburg concentration camp in April 1945, just two weeks before Allied forces liberated the camp. He was 39 years old.

This is the man who wrote about the cost of following Jesus. He was not theorizing. He was living it.

Cheap Grace vs. Costly Grace

The book opens with one of the most famous distinctions in all of Christian theology: cheap grace versus costly grace. Bonhoeffer defines cheap grace as the preaching of forgiveness without requiring repentance, baptism without church discipline, communion without confession. It is grace sold on the market like cheap goods. It is grace without the cross. Grace without Jesus Christ.

Costly grace, by contrast, is the treasure hidden in a field for which a man will gladly sell everything he owns. It is the call of Jesus to follow Him, and it costs everything. But it is grace because it calls us to follow Jesus Christ. It is costly because it costs a man his life, and it is grace because it gives a man the only true life.

Bonhoeffer is not arguing against grace. He is arguing for a grace that actually transforms. The German church of his day had domesticated grace into a theological concept that demanded nothing — a rubber stamp of divine approval on comfortable, unchanged lives. Bonhoeffer saw this as not just spiritually dangerous but politically catastrophic: a church that had accepted cheap grace had no moral backbone to resist evil.

The Call to Follow

The heart of the book is an extended meditation on the Sermon on the Mount (Matthew 5-7). Bonhoeffer reads these words of Jesus not as impossible ideals or future promises but as commands to be obeyed now, by real people, in real circumstances.

When Jesus says "blessed are the meek," Bonhoeffer hears a call to renounce violence and coercion. When Jesus says "love your enemies," Bonhoeffer hears a command that applies even — especially — when your enemies are wearing swastikas. He refuses to let the Sermon on the Mount be spiritualized away into a set of nice sentiments. These are marching orders.

Obedience and Belief

Bonhoeffer makes an argument that still provokes: you cannot truly believe without obeying, and you cannot truly obey without believing. Faith and obedience are not sequential — first you believe, then you obey. They are simultaneous. The act of following is itself an act of faith.

He illustrates this with the story of the rich young ruler. The man asks Jesus what he must do to inherit eternal life. Jesus tells him to sell everything and follow. The man goes away sad. Bonhoeffer's point is sharp: the man's refusal to obey was not a separate issue from his faith. His refusal to follow was his unbelief.

Single-Minded Obedience

Bonhoeffer calls for what he terms "simple obedience" — not complicated theological calculations about what Jesus "really" meant, but straightforward compliance with what He actually said. He is wary of the theologian who can explain away any command of Jesus with sufficient cleverness. The Sermon on the Mount, Bonhoeffer insists, means what it says.

Why This Book Endures

The Cost of Discipleship endures because it was written in blood. Bonhoeffer did not merely teach costly grace — he died for it. His life and his death authenticate every word on every page. In an age of comfortable Christianity, this book stands as a rebuke and an invitation: following Jesus is the most costly and the most glorious thing a human being can do.

Key Insights

Cheap Grace Is the Deadly Enemy of the Church — Grace that forgives without transforming, that blesses without demanding, that covers sin without confronting it — this is not real grace at all. Bonhoeffer argues it is the most dangerous counterfeit in the history of Christianity.

Costly Grace Calls You to Follow — Real grace is not cheap because it cost God the life of His Son. And it costs the disciple everything — comfort, security, reputation, even life itself. But it is grace because it gives us the only life worth living: life with Christ.

Faith and Obedience Are Inseparable — Bonhoeffer rejects the idea that you believe first and obey later. The act of following IS the act of believing. If you are not obeying, you are not really believing — no matter what you profess with your mouth.

The Sermon on the Mount Is a Command, Not a Suggestion — Bonhoeffer refuses to spiritualize away the hard teachings of Jesus. Love your enemies. Turn the other cheek. Give to the one who asks. These are not aspirational ideals; they are orders from the King.

The Church That Accepts Cheap Grace Cannot Resist Evil — Bonhoeffer saw firsthand how a church addicted to cheap grace had no moral spine to oppose Nazism. When discipleship costs nothing, the church has nothing to offer a world in crisis.

Best Quotes

“Cheap grace is the preaching of forgiveness without requiring repentance, baptism without church discipline, communion without confession.”
— Dietrich Bonhoeffer

“When Christ calls a man, He bids him come and die.”
— Dietrich Bonhoeffer

“Judging others makes us blind, whereas love is illuminating. By judging others we blind ourselves to our own evil and to the grace which others are just as entitled to as we are.”
— Dietrich Bonhoeffer

Discussion Questions

What does 'cheap grace' look like in the modern American church? Can you identify specific examples in your own tradition or experience?

Bonhoeffer says 'when Christ calls a man, He bids him come and die.' What has following Jesus cost you personally? What might it still cost?

How do we hold grace and obedience together without falling into legalism on one side or cheap grace on the other?

Bonhoeffer wrote this while watching the church capitulate to political evil. How does his example challenge the church's relationship to political power today?

If you took the Sermon on the Mount as literally as Bonhoeffer does, what is one thing in your life that would have to change this week?

Sermon Starters

Cheap vs. Costly Grace — Contrast Bonhoeffer's two types of grace and invite the congregation to examine which one they are living. Cheap grace asks nothing and changes nothing. Costly grace asks everything and changes everything. Use Matthew 16:24-26 ('Whoever wants to be my disciple must deny themselves and take up their cross and follow me').

Come and Die — Preach on the radical call of Jesus using Bonhoeffer's famous phrase. Dying to self is not a one-time event but a daily practice. Tie to Luke 9:23-25 and Galatians 2:20 ('I have been crucified with Christ and I no longer live, but Christ lives in me').

The Church That Follows — Use Bonhoeffer's historical context to preach about what happens when the church domesticates Jesus. When we reduce Him to a mascot for our comfort, we lose the power to stand against darkness. Connect to Revelation 3:15-16 and Matthew 5:13-16 (salt and light).

The Cost of Discipleship