| 28.12.1961 |
Birth in Bad Homburg v.d.H. |
| 1972-1980 |
humanistic gymnasium “Kaiserin-Friedrich-Gymnasium” in Bad Homburg v.d.H. |
| 1982-1988 |
study of catholic theology at the University of Bonn “Rheinische Friedrich-Wilhelms-Universität” (diploma) |
| 1984-1988 |
study of Christian Archaeology and Classical Philology (greek) at the University of Bonn |
| 1985-1986 |
auxiliary at the chair of History of Ancient Church, Patrology and Christian Archaeology at the University of Bonn (prof. Ernst Dassmann) |
| 22.7.1991 |
doctorate of theology at the University of Bonn; thesis ”Chiliasmus und Antichrist-Mythos. Eine frühchristliche Kontroverse um das Heilige Land”. |
| 1991-1992 |
pastoral work in Düsseldorf-Eller and Euskirchen |
| 1993-1994 |
pastoral work as deacon at St. Marien in Neuss |
| 10.6.1994 |
priest ordination for the arcdiocese of Cologne |
| 1994-1996 |
pastoral work as chaplain at St. Servatius in Siegburg |
| 1996-1999, 2001-2011 |
member of the German College at Campo Santo Teutonico (Vatican) |
| 1999-2006 |
auxiliary priest at St. Quirin in Neuss |
| 9.2.2000 |
habilitation at the University of Bonn, Venia legendi for History of Ancient Church, Patrology and Christian Archaeology |
| since 4.6.2001 |
professor of History of Liturgy and Hagiography at the Pontifical Institute of Christian Archaeology in Rome |
| 20.7.2004 |
invited professor of the Faculty of Theology of the Pontifical University S. Thomas Aquinas in Rome |
| since 26.9.2006 |
member of the Advisory Board of the Görres Society |
| 2006-2012 |
Vicerector of the German College at Campo Santo Teutonico (Vatican) |
| 2007-2020 |
associate professor of the Faculty of Theology of the Pontifical University S. Thomas Aquinas |
| 29.12.2009 |
Kaplan Seiner Heiligkeit ("Monsignore") |
| since 1.1.2011 |
Director of the Roman Institute of the Görres Society |
| 2011-2012 |
Sabbatical at St. John's Seminary in Brighton (Boston) |
| 2016-2017 |
invited professor of the Patristic Institute "Augustinianum" |
| 2020-2026 |
Rector of the Pontifical Institute of Christian Archaeology |
| since 2024 |
associate professor of the Faculty of Theology of the Pontifical University Gregoriana |