"The spirit of the strength and fear of God be with you , you pitiable community. After the libelous writing [of Luther] have made you partly fearful - and also most impudent - it is exceedingly necessary for me to counter the rising evil with a demonstration of Christian mastery. At the present time, this mastery cannot be shown except through an exposition of holy Scripture, especially the teachings of the spirit of Christ, and through a comprehensive comparison of all the secrets and judgement of God. For all knowledge contains within itself its diametrical opposite."