One of the last century's most influential theologians, Dietrich Bonhoeffer, delves into the complexities of following Jesus' teachings in modern times. He questions what it truly means to be a disciple of Jesus for individuals from all walks of life, including businessmen, soldiers, laborers, and aristocrats. By turning to the Sermon on the Mount, Bonhoeffer provides a thought-provoking exploration of the dichotomy between "cheap grace" and "costly grace." He argues that "cheap grace" is a self-granted exemption from true discipleship, whereas "costly grace" requires sacrifice, dedication, and a consistent pursuit of Jesus' will. This kind of grace, Bonhoeffer asserts, "costs a man his life" but ultimately grants "the only true life." Through this seminal work, The Cost of Discipleship, Bonhoeffer presents a powerful call to action, emphasizing the importance of embracing a lifestyle of sacrifice, ethical integrity, and civic responsibility, as exemplified by his own remarkable life and thought.