Luther could not be ignorant of this mediaeval version. He made judicious use of it, as he did also of old German and Latin hymns. Without such aid h… - Philip Schaff

Earlier Versions. Luther was not the first, but by far the greatest translator of the German Bible, and is as inseparably connected with it as Jerome is with the Latin Vulgate. He threw the older translation into the shade and out of use, and has not been surpassed or even equaled by a successor. There are more accurate versions for scholars (as those of De Wette and Weizsäcker), but none that can rival Luther's for popular authority and use.

The Protestant Spirit of Luther's Version. Dr. Emser, one of the most learned opponents of the Reformation, singled out in Luther's New Testament several hundred linguistic blunders and heretical falsifications. Many of them were silently corrected in later editions. He published, by order of Duke George of Saxony, a new translation (1527) for the purpose of correcting the errors of "Luther and other heretics."

Progress of his Version. Luther was gradually prepared for this work. He found for the first time a complete copy of the Latin Bible in the University Library at Erfurt, to his great delight, and made it his chief study. He derived from it his theology and spiritual nourishment; he lectured and preached on it as professor at Wittenberg day after day. He acquired the knowledge of the original languages for the purpose of its better understanding. He liked to call himself a "Doctor of the Sacred Scriptures."