About the author
German Lutheran pastor and theologian (1906–1945), a founder of the Confessing Church that opposed Nazi control of German Protestantism. Bonhoeffer joined the resistance and the conspiracy against Hitler, was imprisoned in 1943, and was executed at Flossenbürg in April 1945; his writings on discipleship, ethics, and 'religionless Christianity' remain deeply influential.
Synopsis
Centered on the Sermon on the Mount, the book argues that grace is free but never cheap: to follow Christ is to obey, to take up the cross, and to break with a world organized against the gospel. Bonhoeffer's distinction between cheap and costly grace became a rebuke to a German church largely accommodating itself to Nazism, and his life gave the argument unbearable weight.
Core passage idea
Paraphrase · Modern copyrighted workBonhoeffer condemns 'cheap grace' — forgiveness preached without repentance and faith without discipleship — and calls instead for the costly grace that bids a person come and follow Christ, whatever the cost.
The distinction between cheap and costly grace turns faith into a demand for obedient action rather than comfortable assurance — a theology that, in Bonhoeffer's hands, underwrote resistance to tyranny. His martyrdom made the book a touchstone of religiously grounded conscience against the state.
To avoid a bubble
Pair with theologies of the 'two kingdoms' and political quietism that counsel obedience to worldly authority, and with the hard ethical debate Bonhoeffer's own life raised: whether a follower of Christ could rightly join a plot to kill a tyrant.
Reading note
Read it together with the story of Bonhoeffer's resistance and death, which give 'costly grace' its full meaning. A central text on faith, conscience, and the Christian confronting an unjust regime.
Best paired with
Martin Luther King Jr., Letter from Birmingham Jail; Hannah Arendt, Eichmann in Jerusalem.