Study of the Bible
His inaugural address as professor of the Greek language at Leipzig university attracted much attention. In line with Erasmus as an example he pleaded for a thorough knowledge of the three biblical languages: Greek, Hebrew and classical Latin. According to his view the Holy scriptures necessarily had to serve as the foundation of theology. As it was common practice amongst bible scholars Mosellanus referred to the church fathers and to Origin and Jerome in particular and even to the work of Augustine: “De doctrina Christiana”.
The church fathers considered the study of the biblical languages a necessity in order to reveal the original inspiration of the words. Mosellanus criticized the scholastic theology heavily as they expressed themselves in a form of Latin that was used around the end of the middle ages, that they used dialectics and to a great extend used aristotelic philosophy in educational syntheses rather than the bible.
Mosellanus also threw light on the semantic and epistemological foundatins of his preference of the original word and languages. He strongly believed that concrete words would pave the way to the straight conciousness of reality. He did not agree with the idea that an abstract concept, separated from an actual spoken language, could be a significant mediator between word and reality.