Gerhard Cardinal Müller was prefect of the Congregation for the Doctrine of the Faith from 2012 to 2017, during which time he also served as president of the Pontifical Biblical Commission, the International Theological Commission, and the Pontifical Commission Ecclesia Dei. Previously professor of dogmatics at the University of Munich from 1986 until 2002, Müller was appointed bishop of Regensberg, Germany, in 2002 by Pope John Paul II, later being elevated to archbishop in 2012 by Pope Benedict XVI and to cardinal in 2014 by Pope Francis. Prior to his appointment as prefect, Müller was chairman of the ecumenical commission of the German Bishops' Conference, and he also served on the Pontifical Council for Culture, the Congregation for Catholic Education, and the Pontifical Council for Promoting Christian Unity. After his retirement in 2017, Müller was appointed a member of the Apostolic signatura by Pope Francis in 2021. The author of more than six hundred works on various topics, including dogmatic theology, revelation, ecumenism, and the diaconate, Müller is also the editor of The Complete Works of Joseph Ratzinger—Pope Benedict XVI in sixteen volumes at Verlag Herder.
