Student, Georg-August University, Goettingen, Germany, 1981. Doctor of Theology, Philipps University, Marburg, Germany, 1984.
Assistant Georg-August University, 1981—1984, professor, since 1999, director, since 2000. Lecturer Philipps University, Marbury, 1993—1999. Lecturer Missions Seminar, Hermannsburg, Germany, 1988—1999.
Visiting professor Gurukul Theological School, India, since 1999. Guest professor University Joensuv, Finland, 2003.
Pastor Landes Rirche Hannerers, 1984—1994. Member of Syrologin Symposium (president 1998), Association Studium Des Christlichen Osters 2002.
Married Elisabeth Petersen, July 12, 1984.