Bishop Denis Theurillat, auxiliary bishop of Basel, Switzerland, from 2000 to 2021.

Diocese of Basel.
Bishop Denis Theurillat, auxiliary bishop of Basel, Switzerland, from 2000 to 2021.

Bishop Theurillat told the Swiss Catholic Church’s website kath.ch that he had asked to resign five years before the customary retirement age for bishops because of the increasing burdens of his office.