Cardinal Gerhard Müller, the head of the Congregation for the Doctrine of the Faith (CDF), has said that his role is not to participate in the controversy over the four cardinals’ letter to the Pope.

He has also indicated that he does not believe Church doctrine can change on Communion for the remarried.

In an interview with the German website Kathpress, Cardinal Müller said that the CDF’s role was to speak with the authority of the Pope, not to “participate in the controversy of opinion”.

He was answering a question about the dubia – that is, requests for clarification submitted to the Pope by four cardinals. They ask whether certain teachings of the Church, repeated in the last 35 years by Pope St John Paul II, are still valid. The Pope has not replied to the dubia since they were submitted in September.