He became the most popular teacher of Hebrew and of Old Testament introduction and exegesis in Germany; during his later years his lectures were attended by nearly five hundred students.
Ia menjadi guru bahasa Ibrani yang paling populer untuk pengenalan dan eksegesis Perjanjian Lama di Jerman; selama tahun-tahun terakhirnya kuliahnya dihadiri oleh hampir lima ratus siswa.