Johannes Mathesius (1504–1565), preacher and pastor in Joachimsthal, Bohemia, belongs to the reformers who were strongly influenced by Wittenberg. After all, he was personally acquainted with Luther and Melanchthon. His sermons, of which the sermons on Luther are best known, have been reprinted in numerous editions in the 19th century and have been instrumental in the dissemination of the Wittenberg theology. Many generations of pastors did find here homiletical models and a clear implementation of the Wittenberg theology in the everyday life of the congregation. Under his leadership the Bohemian mining centre Joachimsthal became a reformed model community. The present volume is a collection of lectures of two conferences in 2004 and 2014.