Bucer, who was unremitting in his efforts to secure that union which was his life-ideal, had already, at the Diet of Augsburg, paved the way for an understanding, not without some success. At the Coburg (September 25-26, 1530) he managed to win over Luther to his view, viz. that an agreement might be looked for with the Strasburgers regarding the Sacrament.[1418] He then travelled through Upper Germany and Switzerland with a plan for compromise, in which the contradiction between the denial and assertion of the Presence of Christ in the Sacrament was ably concealed; Melanchthon he met at Cassel in 1534, and on this occasion, ostensibly in the name of many South-German theologians, made proposals which seem to have satisfied Luther.

After further preliminaries, peace negotiations were to have taken place at Eisleben in the spring of 1536, but as Luther, owing to illness and new scruples, did not appear, discussion was deferred till May 22, the delegates to meet at Wittenberg. Thither representatives of Strasburg, Augsburg, Memmingen, Ulm, Esslingen, Reutlingen, Frankfurt, and Constance betook themselves, accompanied by the Lutherans, Menius from Eisenach and Myconius from Gotha. No Swiss delegate was present.

After protracted negotiations the South-German theologians accepted a number of articles drawn up by Melanchthon and known as the Wittenberg Concord.[1419]

In this they recognised the practice of infant baptism; as regards Confession, they admitted that, though confession as formerly practised could not be tolerated, yet a humble private interview with the preacher, and private absolution previous to the reception of communion, were useful and wholesome. On the other hand, however, the main difference, viz. that concerning the Presence of Christ in the Sacrament, was only seemingly bridged over. It is true the South-German delegates accepted the formula, that in the Sacrament, the Body and Blood of the Lord are “really and substantially” present by virtue of Christ’s words of institution, so that even the “unworthy” verily receive the Body and Blood of Christ. The interpretation which they, headed by Bucer, placed upon the words showed, however, quite plainly, that they did not agree with Luther, but still clung to the view that Christ is not corporally present but only by that faith, which even the “unworthy” may have, and that He does not bestow on the communicant His Flesh and Blood, but merely His grace. “The Real Presence of Christ was to him [Bucer] after all only a spiritual presence.”[1420] At any rate “the South-Germans, under stress of political danger, rejoined Luther,”[1421] though some of the towns subsequently added conditions to their acceptance of the arrangements made by their theologians.

Having been thus far successful Bucer, with consummate ability and eloquence, proceeded to try to win over the friendly Swiss Zwinglians to the Concord.

The Swiss were not, however, to be so easily induced to take this step. In spite of several friendly letters from Luther they could not arrive at the same apparent agreement with him as the South-Germans. For this the blame rested to some extent on Luther’s shoulders, his conduct at this juncture, owing to political considerations, being neither well-defined nor straightforward. The Burgomasters and Councillors of the seven towns, Zürich, Bern, Basle, Schaffhausen, St. Gall, Mühlhausen and Bienne, addressed letters to him couched in conciliatory language, but Luther, in spite of Bullinger’s request, would not even enumerate in detail the points of difference which separated them from him. For the nonce he preferred the policy of leaving doctrine alone and of “calming down, smoothing and furthering matters for the best,”[1422] though all the time he was well aware of their theological views and firm in his repudiation of them.

“The matter refuses to suit itself to us, and we must accordingly suit ourselves to it,”[1423] such was, for a long while, his motto. He is willing to hold out to the Zwinglians the hand of friendship without, however, consenting to regard the points in dispute as minor matters. Possibly he cherished the hope that, little by little, agreement would be reached even on these points.

Luther’s attitude has rightly been considered strange, particularly when compared with his former severity. Even Protestants have instanced it as remarkable, that he should have contrived “to close his eyes to the differences which still remained in spite of the Concord, and to agree with people whose previous teaching he had regarded as dangerous heresy, requiring to be expelled by a determined testimony to the truth.”[1424] At any rate “the broadness manifested by Luther in this matter of faith” was something very foreign to his usual habits.

The explanation of the change in his behaviour lies chiefly in his urgent desire “to become terrible to the Pope and the Emperor” by forming an alliance with the Swiss Churches and townships, a hope which he even expressed to his Wittenberg friends, adding, however, that “in men one can never trust,” and, “I will not surrender God’s Word.”[1425] To Duke Albert of Prussia he wrote full of joy, in May, 1538: “Things have been set going with the Swiss, who hitherto have been at loggerheads with us on account of the Sacrament.... I hope God will put an end to this scandal, not for our sake, for we have deserved it, but for His Name’s sake, and in order to vex the abomination at Rome, for they are greatly affrighted and apprehensive at the new tidings.”[1426] Considerations of policy had entirely altered Luther’s tone to the Zwinglians.

The bridge, however, collapsed before its completion.