In 1538 Luther published his Articles, which _editio princeps_ was followed by numerous other editions, two of them in the same year. In the copy of the Articles which Spalatin took at Wittenberg the title reads: "Opinion concerning the Faith, and What We Must Adhere to Ultimately at the Future Council. _Bedenken des Glaubens halben, und worauf im kuenftigen Konzil endlich zu beharren sei._" The _editio princeps_ bears the title: "Articles which were to be Delivered on Behalf of Our Party at the Council of Mantua, or Where Else It Would Meet. _Artikel, so da haetten aufs Konzilium zu Mantua, oder wo es wuerde sein, ueberantwortet werden von unsers Teils wegen._" These titles designate the purpose for which the articles were framed by order of the Elector. In the edition of 1553, published by John Stolz and John Aurifaber, Luther's Articles are designated as "prepared for the Diet of Smalcald in the year 1537, _gestellt auf den Tag zu Schmalkalden Anno 1537._" Says Carpzov: "They are commonly called Smalcald Articles after the place where they were composed [an error already found in Brenz's letter of February 23, 1537, appended to the subscriptions of the "Tract on the Power and Primacy of the Pope" (529). See also Formula of Concord 777, 4; 853, 7], as well as solemnly approved and subscribed since the articles were composed by Luther and approved by the Protestants at Smalcald a town in the borders of Saxony and Ducal Hesse, and selected for the convention of the Protestants for the reason that the individuals who had been called thither might have an easy and safe approach." (_Isagoge,_ 769.)