Martin Luther with preached and written word unleashed the unconditional and uncompromising gospel of God's love for sinners in Jesus Christ, crucified and risen. He exposed both man's lost condition and Christ's unfathomable love with unrelenting persistence and unmistakable clarity. Bound in sin, only Christ could set the sinner free, and Luther held Christ before his students, hearers, and readers. That message marked and formed his students and coworkers, and yet after his death bitter disputes broke out about some of the most central aspects of his theology. Debates cut to the very heart...