To strengthen the Lutheran confession as firmly as possible before the threatening storm, he now delivered his powerful sermons "On the False Prophets," and "On the Right Worthy Sacrament of the Body and Blood of Christ," which were directed both against Rome and Protestant religious fanatics.
Luterliku usutunnistuse tugevdamiseks nii kindlaks kui võimalik enne ähvardavat tormi avaldas ta nüüd oma võimsad jutlused "Valeprohvetitest" ja "Kristuse keha ja vere õigest sakramendist", mis mõlemad olid suunatud Rooma ja protestantlike usufanaatikute vastu.