Canon 34 of the Apostolic Canons
Every ministry of unity is expressed in the form of communion
by Dimitri Salachas

A shot of the closing ceremony of the Inter-Religious Conference in Lyons
Canon 34 is the oldest we have on council operations, and refers to the bishops of every nation. By “nation” [ethnos] is meant a region, or, according to some interpretations, a vast geographical area, with its ethnic and cultural features that Christianity, in its progressive spread, always aimed to respect. This Canon is well known in the West (cf Decree of Gratian, part II, cause IX, quest. III C V). It links two principles. The first is that in every region there must be a single protos, or head (institution of primatiality and unity). The second is that the protos cannot act without the many (institution of synodality). No ministry or institution of unity may exist that is not expressed under the form of communion. The Eastern conception of the Church requires an institution that expresses the oneness of the Church, and not only its multiplicity. But the multiplicity cannot be absorbed by the primatiality of the protos. The irreplaceable ministry of the protos cannot replace the ministry of the “many”, that is of the pastors of the local Churches. At the level, therefore, of the province (metropolis) or, in an ampler way, of the patriarchal Church, there is a center of unity - the metropolitan, the patriarch. The real equality of all the bishops is expressed around a center of real unity. The reference to such a center of unity is binding. But as the other bishops of the province or of the patriarchy must not take decisions that have effects outside their own area entrusted to them without taking account of the opinion of the metropolitan or patriarch, so also he cannot take binding decisions for the other bishops ignoring their opinion. Perfect reciprocity, in the likeness of that of the Three Persons of the Sole Divinity. The Holy Trinity is the archetype of the council unity of the Church. The synodal action of the bishops in harmony renders glory to God.
Dimitri Salachas
Professor of Eastern Canon Law at the Pontifical Urbanian University and the Pontifical Eastern Institute