Dietrich Bonhoeffer, a leader in the German church called the Confessional Church, was arrested by the Gestapo in April 1943. (The Gestapo was the ruthless and murderous Nazi war machine’s secret police during World War II.) A year later, Bonhoeffer was jailed in Berlin’s Tegel prison. Bonhoeffer was later hung by the Nazis at Flossenburg concentration camp only a few days before the camp was liberated by the allies.But on April 30, 1944, Bonhoeffer was still very much alive, though imprisoned. He was mulling over the significance of religion — what it meant to be a Christian in such trying ...