Luther’s Works: The American Edition, published by Concordia and Fortress Press between 1955 and 1986, comprises fifty-five volumes. These are a selection representing only about a third of Luther’s works in the Latin and German of the standard Weimar Edition, not including the German Bible.
Luther did not agree with the view of many Bible scholars who considered the five books of Moses to be of small value. He saw them as a wellspring of all-important knowledge and understanding. Far from seeing the Book of Deuteronomy as a list of dry laws that had little to do with faith, Luther's Lectures on Deuteronomy was an effort to apply the Deuteronomic interpretation of the Mosaic Law and covenant to both the flesh and the spirit.