Dietrich Bonhoeffer, the German Lutheran pastor and theologian executed by the Nazis in 1945 for his resistance to Hitler, wrote one of the most influential works on Christian living in the 20th century: The Cost of Discipleship (originally published in German as Nachfolge in 1937). Amid the rising tyranny of Nazi Germany and the complicity of much of the church, Bonhoeffer challenged believers to reject superficial faith and embrace radical obedience to Jesus Christ. At the heart of the book lies his famous distinction between “cheap grace” and “costly grace,” concepts that remain profoundly relevant for understanding authentic discipleship today.

The Danger of Cheap Grace

Bonhoeffer opens his book with a stark warning: cheap grace is the “deadly enemy” of the church. He describes it as grace that comes without demands, a diluted version of the gospel that offers forgiveness and salvation at no personal cost. Cheap grace is “the preaching of forgiveness without requiring repentance, baptism without church discipline, Communion without confession, absolution without personal confession.” It is grace without discipleship, grace without the cross, and ultimately grace without the living, incarnate Jesus Christ. In Bonhoeffer’s view, this distortion arose partly from a misapplication of Reformation teachings, particularly Martin Luther’s emphasis on justification by faith alone. While Luther rightly proclaimed that salvation is not earned by works, later generations twisted this into an excuse for moral laxity, forgiveness proclaimed as a general truth that allows people to remain unchanged. Cheap grace justifies sin without justifying the sinner; it provides a false security that lets individuals “stay as they are” while enjoying the consolations of religion. Bonhoeffer saw this as poison that had killed true following of Christ in the church of his day, enabling compromise with evil rather than resistance to it.

The Call to Costly Grace

In contrast, costly grace is the gospel that must be sought repeatedly, asked for, and entered through a narrow door. It is free, utterly unearned, but it costs everything because it demands total submission to Christ. “It is costly because it costs a man his life,” Bonhoeffer writes, “and it is grace because it gives a man the only true life.” Costly grace compels the believer to take up the yoke of Christ, to follow Him in obedience, self-denial, and suffering. It is the grace that calls sinners to repentance and transformation, linking justification inseparably to sanctification and daily discipleship. Bonhoeffer roots this in Jesus’ own words, especially the Sermon on the Mount, which he expounds at length in the book. The call to discipleship is immediate and unconditional: when Christ says “Follow me,” there is no room for delay, rationalisation, or partial commitment. True faith manifests in single-minded obedience, where hearing the word leads directly to doing it. Discipleship involves renouncing worldly attachments, bearing the cross, and living out the radical ethics of the kingdom, loving enemies, practicing humility, and pursuing righteousness that exceeds mere legalism.Bonhoeffer’s own life embodied this costly grace. As a leader in the Confessing Church, he rejected the “German Christians” who accommodated Nazism, founded an underground seminary, and participated in plots against Hitler. His writings were not abstract theology but a call forged in the crucible of persecution, reminding believers that following Christ may lead to rejection, suffering, or even death.

What Can We Learn for Our Discipleship Today?

In our contemporary context, marked by cultural pressures, moral relativism, and sometimes comfortable Christianity, Bonhoeffer’s message challenges us deeply. Cheap grace manifests when faith becomes a private comfort, a ticket to heaven without transformation, or a religion that conforms to societal norms rather than confronting them. It appears in easy-believism that demands no repentance, in churches that prioritize attendance over holiness, or in personal lives where grace excuses ongoing sin rather than empowering victory over it.

Costly grace, however, invites us to a higher path. We learn that discipleship is not optional for the believer; it is the natural outflow of receiving grace. True following of Christ requires:

  • Radical obedience — Immediate response to Jesus’ call, without endless debate or conditions.
  • Self-denial and cross-bearing — Willingness to suffer loss, whether reputation, comfort, or rights, for the sake of the gospel.
  • Visible transformation — A life that reflects kingdom values: humility, truthfulness, mercy, peacemaking, and love for enemies.
  • Community and accountability — Grace is not solitary; it thrives in the church through confession, discipline, and mutual encouragement.

Bonhoeffer reminds us that grace is free, but it is not cheap. It cost God the life of His Son, and it calls us to offer our lives in response. In an age of superficial commitments, embracing costly grace means living as disciples who are willing to “come and die” to self so that we might truly live in Christ. This is the path to authentic freedom, joy, and eternal life.

Sources:

  • Bonhoeffer, Dietrich. The Cost of Discipleship. Translated by R. H. Fuller. New York: Touchstone, 1995 (original German publication 1937).
  • Wikipedia. “The Cost of Discipleship.” https://en.wikipedia.org/wiki/The_Cost_of_Discipleship
  • Various summaries and analyses from Blinkist, Shortform, SuperSummary, and theological discussions on sites like The Gospel Coalition and Christian Scholars Review.