Léon Ier · concile-oecumenique · 8 octobre 451

Chalcédoine

Concile de Chalcédoine

Pré-Vatican II magistere-extraordinaire-concile-oecumenique
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Introduction

It was the emperor Marcian who, after the “robber” council of Ephesus (449), commanded this council to meet. Pope Leo I was opposed to it. His view was that all the bishops should repent of their ways and individually sign his earlier dogmatic letter to Flavian, patriarch of Constantinople, and so avoid a new round of argument and debate. Moreover, the provinces of the West were being laid waste by Attila’s invasions. But before the pope’s view became known, the emperor Marcian had, by an edict of 17 May 451, convoked the council for 1 September 451. Although the pope was displeased, he sent legates: Paschasinus bishop of Lilybaeum, Bishop Lucentius, the priests Boniface and Basil, and Bishop Julian of Cos. No doubt Leo thought that the council would cause people to leave the church and go into schism. So he wanted it to be postponed for a time, and he implored the emperor that the faith handed down from ancient times should not become the subject of debate. The only business should be the restoration of the exiled bishops to their former positions.

The council was convoked at Nicaea but later transferred to Chalcedon, so as to be close to Constantinople and the emperor. It began on 8 October 451. The legates Paschasinus, Bishop Lucentius and the priest Boniface presided, while Julian of Cos sat among the bishops. By their side were the imperial commissars and those serving on the Senate, whose responsibility was simply to keep order in the council’s deliberations.

The lists we have of those present are unsatisfactory. According to Leo there were 600 bishops at the council, whereas according to a letter to him there were 500.

The “Definition of the faith” was passed at the council’s fifth session, and was solemnly promulgated at the sixth session in the presence of the emperor and the imperial authorities. The formula accepted in the decree is: Christ is one in two natures. This is in agreement with Leo’s letter to Flavian of Constantinople, and Leo’s letter is expressly mentioned in the Definition of the faith .

The council also issued 27 disciplinary canons (it is unclear at which session).

What is usually called canon 28 (on the honour to be accorded the see of Constantinople) is in fact a resolution passed by the council at the 16th session. It was rejected by the Roman legates.

In the ancient Greek collections, canons 29 and 30 are also attributed to the council:

Introduction and translation taken from Decrees of the Ecumenical Councils, ed. Norman P. Tanner