Letter 43: Already and from the beginning, in the synods which have been held, we have received such freedom of speech from the most holy Peter, chief of the Apostles, as to have the power both to maintain the Truth in the cause of peace, and to allow no one to disturb it in its firm position, but at once to repel the mischief. Since then the council of bi...

Pope Leo the GreatUnknown|c. 445 AD|leo great
christologyimperial politicspapal authority
Theological controversy; Church council; Persecution or exile

To the most glorious and serene Emperor Theodosius: Leo, Bishop of Rome.

I. He protests the conduct of Dioscorus at the Council of Ephesus

From the beginning and in all the synods that have been held, we have received from the most holy Peter, chief of the Apostles, such freedom of speech as to have the authority both to uphold the truth in the cause of peace and to permit no one to disturb it, but to repel every attack at once.

Since, then, the council of bishops that you ordered to be held at Ephesus on account of the case of Flavian is doing harm to the faith itself and inflicting wounds on all the churches -- and this has been brought to our attention not by some unreliable messenger, but by the most reverend bishops whom we sent as our representatives, and by our most trustworthy deacon Hilarus, who have recounted to us what took place -- and since these events must be attributed to the fault of those who assembled there, who did not, as is customary, render their judgment with a pure conscience and right discernment, but produced a verdict that injures all the churches:

We have learned that not all who should have been present at the proceedings were admitted: some were expelled, others brought in, and those who remained were ensnared into an impious act of subscription by the machinations of Bishop Dioscorus. The declaration he forced through was of such a nature as to damage the entire Church. When our delegates from the Apostolic See saw how exceedingly impious and hostile to the faith it was, no pressure could force them to consent. They protested vigorously, as they were bound to do, that the Apostolic See could never accept it.

II. He asks the emperor to restore the ancient Catholic doctrine

Therefore, most peace-loving prince, for the sake of the faith, avert this danger from your own godly conscience, and do not allow human presumption to do violence to Christ's Gospel. In my sincere desire -- shared by the bishops who are with me -- that you, most Christian and revered emperor, should above all things please God, to whom the prayers of the whole Church are poured out in one voice for your reign, I offer you this counsel. I fear that if we keep silent on so great a matter, we shall face punishment before the tribunal of Christ.

I entreat you, therefore, before the undivided Trinity of the one Godhead, which is injured by these proceedings and which is the guardian of your empire, and before Christ's holy angels: let all things remain as they were before this judgment. Let them await the weightier decision of a new synod, at which the full number of the world's bishops may be gathered together, so that a most firm decree may be enacted -- one that no one will dare oppose, one that will be for our benefit not only in the present but in all time to come.

Dated the 13th of October (AD 449).

Modern English rendering for readability. See the 19th-century translation or original Latin/Greek for scholarly use.

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