While he was thus pouring forth his sorrows, he himself was threatened with a great trial in Wittenberg. A preacher named Conrad Cordatus, of Niemegk, a zealous adherent of Luther, had been present at a lecture, delivered by Cruciger towards the end of July, 1536. In this, Cruciger expressed the opinion that in the article of Justification, good works are the condition, without which we cannot be saved. Cordatus was greatly and properly shocked at this, for such a form of expression was totally opposed to the doctrine of the Lutheran Church. In the following month he wrote to Cruciger, to call him to account, on account of this wrong doctrine. The professor did not reply. Cordatus wrote again, threatening that he would not be silent until he should hear a recantation of this heresy. If this should not be done, he would apply to the theological faculty for a decision. He also said that there were many trifling Theologians in Wittenberg, who would rather read and hear the dead Erasmus than the living Luther. Now Cruciger replied, and defended his views. On the 17th of September, Cordatus came to Wittenberg, and visited Cruciger. He here heard that what he had read concerning the Gospel of John was the work of Melanchthon, who, as Ratzeberger relates, in a manner composed their lectures for the professors. "For no labor was distasteful to Philip, and he served every one cheerfully." The next day Cordatus went to Luther, and presented the whole matter to him. Luther replied: "You are not the first to inform me of this. Michael Stiefel and Amsdorf have already asked me about it." It is not known how much more was spoken and resolved, although it seems that Luther labored to suppress the difficulty. Melanchthon's journey of recreation was not a little embittered, for he received the news of this occurrence in Wittenberg. Even while yet upon the road he found it necessary to write to Luther, Bugenhagen, Jonas, and Cruciger, in which he at length justifies his manner of teaching. He says: "I never wished, and in this particular point of dispute, I have never taught anything else but what you all together unite in teaching." He declared that many had fallen into the opinion, especially on account of this proposition--"We are justified by faith alone," that we are justified by the new life, or the gifts communicated to us.