25 of the Dogmatic Constitution Lumen Gentium of the Second Vatican Council concerning the Magisterium of the Church and the adherence owed to it. Whether we agree with Archbishop Lefebvre on his reading of Lumen Gentium No. At issue is the reality that Leo’s Vatican uses the moral authority of the Catholic Church to undermine Lumen Gentium’s warning to unfaithful Catholics. Thus, this too constitutes a negation of the words from Lumen Gentium above. God alone knows the depth of the crisis in the Catholic Church and how it will end.