C.F.W. Walther's "The Proper Distinction Between Law and Gospel" is the Missouri Synod theologian's greatest theological work. This book consists of a series of thirty-nine lectures that Dr. Walther gave his seminary students at the end of his life on one of the foundational elements of Lutheran thought. In twenty-five theses, Walther expounds upon the distinction between the Law as God's demands upon his creatures, and the Gospel of God's free grace in Christ. Each thesis is defended by extensive Scriptural exegesis.