January 21, 1530, Emperor Charles V proclaimed a diet to convene at Augsburg on the 8th of April. The manifesto proceeded from Bologna, where, three days later, the Emperor was crowned by Pope Clement VII. The proclamation, after referring to the Turkish invasion and the action to be taken with reference to this great peril, continues as follows: "The diet is to consider furthermore what might and ought to be done and resolved upon regarding the division and separation in the holy faith and the Christian religion; and that this may proceed the better and more salubriously, [the Emperor urged] to allay divisions, to cease hostility, to surrender past errors to our Savior, and to display diligence in hearing, understanding, and considering with love and kindness the opinions and views of everybody, in order to reduce them to one single Christian truth and agreement, to put aside whatever has not been properly explained or done by either party, so that we all may adopt and hold one single and true religion; and may all live in one communion, church, and unity, even as we all live and do battle under one Christ." In his invitation to attend the diet, the Emperor at the same time urged the Elector of Saxony by all means to appear early enough (the Elector reached Augsburg on May 2 while the Emperor did not arrive before June 16), "lest the others who arrived in time be compelled to wait with disgust, heavy expenses and detrimental delay such as had frequently occurred in the past." The Emperor added the warning: In case the Elector should not appear, the diet would proceed as if he had been present and assented to its resolutions. (Foerstemann, _Urkundenbuch,_ 1, 7 f.) March 11 the proclamation reached Elector John at Torgau. On the 14th Chancellor Brueck advised the Elector to have "the opinion on which our party has hitherto stood and to which they have adhered," in the controverted points, "properly drawn up in writing, with a thorough confirmation thereof from the divine Scriptures." On the same day the Elector commissioned Luther, Jonas, Bugenhagen, and Melanchthon to prepare a document treating especially of "those articles on account of which said division, both in faith and in other outward church customs and ceremonies, continues." (43.) At Wittenberg the theologians at once set to work, and the result was presented at Torgau March 27 by Melanchthon. On April 4 the Elector and his theologians set out from Torgau, arriving at Coburg on the 15th, where they rested for eight days. On the 23d of April the Elector left for Augsburg, while Luther, who was still under the ban of both the Pope and the Emperor, remained at the fortress Ebernburg. Nevertheless he continued in close touch with the confessors, as appears from his numerous letters written to Augsburg, seventy all told about twenty of which were addressed to Melanchthon. 19. Apology Original Plan of Lutherans.