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Dietrich Bonhoeffer was a German Lutheran pastor, theologian, anti-Nazi dissident, and founding member of the Confessing Church. He was executed by the Nazis at the age of 39 for his involvement in the failed July 20 plot to assassinate Adolf Hitler. Bonhoeffer's writings have had a profound influence on Christian theology and ethics, and he is considered one of the most important theologians of the 20th century.