|Participants at the Dignitatis Humanae Colloquium in Norcia (Photo Source)|
It is part of the essence of a true polity that it worship the one true God in the manner which He has appointed. Every state is thus obliged to discover the true religion and embrace it corporately. As it happens the true religion is Catholicism and part of the revelation upon which Catholicism is founded is the reservation of judgement in religious matters to the spiritual power. The state does indeed have of its own nature competence in religious maters but the only true polity without qualification is the City of God, the Catholic Church. It is through adherence to the Catholic Church that temporal polities receive their perfection as human societies. As Pink often emphasises, Leo XIII teaches that the proper relationship between Church and state is that of soul and body. It is the nature of the body to be united to the soul. Without the soul there is no human body. Thus it is part of the essence of the state to coerce in religious matters but in this order of providence it is also part of the essence of the state to exist within the Catholic Church; a civil power that is not united to the Church thus lacks de facto this right that belongs in the abstract to the state. As St Augustine says “there is no justice save in that commonwealth whose founder and ruler is Christ” and “kingdoms without justice are but criminal gangs”.