|1956||Born in Oberhausen (Rheinland)|
|1975-1980||Studies in Theology at the Universities of Göttingen and Jerusalem|
|1980-1985||Studies in Jewish History and Literature at the Hebrew University in Jerusalem; pastoral training in the Lutheran Church of Hannover|
|1985-1994||Research fellow at the Institute of Jewish Studies, Free University Berlin, secretary of DFG projects „Translation of the Hekhalot Literature“, „Synoptic Edition of the Talmud Yerushalmi”|
|1988||Dr. theol., Kirchliche Hochschule Berlin|
|1994-1997||Assistant professor at the Institute of Jewish Studies, Free University Berlin, collaborator of the Center for Hebrew textual research; member of the Leibniz research team on „The Talmud Yerushalmi and its Greco-Roman context“|
|1996||Habilitation at the Philosophical Faculty of the Free University in Berlin, venia legendi for Judaistik (Jewish studies)|
|since 1997||Full professor for New Testament und ancient Judaism, Director of the Institute of Jewish studies at Göttingen University; member of Verband der Judaisten in Deutschland and the European Association for Jewish Studies|
- Rabbinic literature und theology.
- Intertextual exegesis of the New Testament.
- Early Jewish mysticism, Kabbalah, Hasidism.
- German and Hebrew Jewish literature of the 20th century.
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