Dietrich Bonhoeffer was a German Lutheran pastor and theologian who became a prominent figure of resistance against the Nazi regime. Born in 1906, he was a founding member of the Confessing Church, which opposed the Nazification of Protestantism. His theological work, including the classic *The Cost of Discipleship*, examined the relationship between faith and the secular world. After being arrested by the Gestapo for his involvement in efforts to save Jewish lives, he was eventually executed at the Flossenbürg concentration camp in 1945.