Ecumenical Councils are those to which the bishops, and others entitled to vote, are convoked from the whole world (oikoumene) under the presidency of the pope or his legates, and the decrees of which, having received papal confirmation, bind all Christians. A council, Ecumenical in its convocation, may fail to secure the approbation of the whole Church or of the pope, and thus not rank in authority with Ecumenical councils. Such was the case with the Robber Synod of 449 (Latrocinium Ephesinum), the Synod of Pisa in 1409, and in part with the Councils of Constance and Basle.
The second rank is held by the general synods of the East or of the West, composed of but one-half of the episcopate. The Synod Of Constantinople (381) was originally only an Eastern general synod, at which were present the four patriarchs of the East (viz. of Constantinople, Alexandria, Antioch, and Jerusalem), with many metropolitans and bishops. It ranks as Ecumenical because its decrees were ultimately received in the West also.
Patriarchal, national, and primatial councils represent a whole patriarchate, a whole nation, or the several provinces subject to a primate. Of such councils we have frequent examples in Latin Africa, where the metropolitan and ordinary bishops used to meet under the Primate of Carthage, in Spain, under the Primate of Toledo, and in earlier times in Syria, under the Metropolitan – later Patriarch – of Antioch.
Provincial councils bring together the suffragan bishops of the metropolitan of an ecclesiastical province and other dignitaries entitled to participate.
Diocesan synods consist of the clergy of the diocese and are presided over by the bishop or the vicar-general.
A peculiar kind of council used to be held at Constantinople, it consisted of bishops from any part of the world who happened to be at the time in that imperial city. Hence the name synodoi enoemousai “visitors’ synods”.
Lastly there have been mixed synods, in which both civil and ecclesiastical dignitaries met to settle secular as well as ecclesiastical matters. They were frequent at the beginning of the Middle Ages in France, Germany, Spain, and Italy. In England even abbesses were occasionally present at such mixed councils. Sometimes, not always, the clergy and laity voted in separate chambers.
Although it is in the nature of councils to represent either the whole or part of the Church organism yet we find many councils simply consisting of a number of bishops brought together from different countries for some special purpose, regardless of any territorial or hierarchical connection. They were most frequent in the fourth century, when the metropolitan and patriarchal circumscriptions were still imperfect, and questions of faith and discipline manifold. Not a few of them, summoned by emperors or bishops in opposition to the lawful authorities (such as that of Antioch in 341), were positively irregular, and acted for evil rather than good. Councils of this kind may be compared to the meetings of bishops of our own times; decrees passed in them had no binding power on any but the subjects of the bishops present, they were important manifestations of the sensus ecclesiae (mind of the Church) rather than judicial or legislative bodies. But precisely as expressing the mind of the Church they often acquired a far-reaching influence due, either to their internal soundness, or to the authority of their framers, or to both.
