Luther, after reading the last-mentioned treatises of Zwingli and Oecolampadius, resolved to publish one answer more, the last; for Satan, he said, must not be suffered to hinder him further in the prosecution of other and more important matters. At this time he was particularly anxious to complete his translation of the Bible, being now hard at work with the books of the Prophets. His answer to Zwingli grew ultimately into the most exhaustive of all his contributions to the dispute. It appeared in March 1528 under the title of 'Confession concerning the Lord's Supper.' He went over once more all the most important questions and arguments which had formed the subject of contention, expounded his ideas more fully on the Person and Presence of Christ, and explained calmly and impressively the passages of Scripture relating thereto. He concluded with a short summary of his own confession of Christian faith, that men might know, both then and after his death, how carefully and diligently he had thought over everything, and that future teachers of error might not pretend that Luther would have taught many things otherwise at another time and after further reflection. Zwingli and Oecolampadius hastened at once to prepare new pamphlets in reply, and to publish them with a dedication to the Elector John and the Landgrave Philip. But Luther adhered to his resolve. He let them have the last word, as he had done with Erasmus. They had not contributed anything new to the dispute. While Luther was writing his last treatise against the Sacramentarians, he found himself obliged to issue a fresh protest against the Anabaptists. This was a tract entitled 'On Anabaptism; to two pastors.' But while denouncing these sectaries, he protested strongly against the manner in which the civil authorities were dealing with them, by the infliction of punishment and even death on account of their principles, even when no seditious conduct could be alleged against them. Everyone, he said, should be allowed to believe what he liked. Similarly he wrote to Nüremberg shortly after, where as we have already mentioned, the new errors were spreading, saying that he could in no wise admit the right to execute false prophets or teachers; it was quite enough to expel them. Luther in this distinguished himself above most of the men of the Reformation. At Zurich, while Zwingli was accusing Luther of cruelty, Anabaptists were being drowned in public. The foreground is now occupied again by the struggle with Catholicism--in other words, by the contest with the German princes who were hostile to the Reformation, and with the Emperor himself and the majority of the Diet. CHAPTER IV. CHURCH DIVISIONS IN GERMANY--WAR WITH THE TURKS--THE CONFERENCE AT MARBURG, 1529.