 At age 17, his father sent him to study with Solomon Breuer in Frankfurt, Germany with the intention that he would become a Rabbi.However, he decided against the rabbinate after encountering the circle of Jewish intellectuals, including Franz Rosenzweig, around Rabbi Nehemiah Anton Nobel.In July 1920, Rosenzweig invited Glatzer to join the newly-established Freies Jüdisches Lehrhaus, where he taught biblical exegesis, Hebrew, and the Midrash.