Orthodox Christianity: Silencing The Opposition Since 325 AD

When Constantine returned to Byzantium, certain philosophers came to him to complain of the innovations in religion, and particularly of his having introduced a new form of worship into the state, contrary to that followed by his forefathers, and by all who were formerly in power, whether among the Greeks or the Romans. They likewise desired to hold a disputation on the doctrine with Alexander the bishop; and he, although unskilled in such argumentative contests, and perhaps persuaded by his life, seeing that he was an excellent and good man, accepted the struggle at the command of the emperor. When the philosophers were assembled, since every one wished to engage in the discussion, he requested that one whom they esteemed worthy might be chosen as spokesman, while the others were to remain silent. When one of the philosophers began to open the debate, Alexander said to him, “I command thee in the name of Jesus Christ not to speak.” The man was instantaneously silenced. It is then right to consider whether it is a greater miracle that a man, and he a philosopher, should so easily be silenced by a word, or that a stone-wall should be cleft by the power of a word, which miracle I have heard some attribute to Julian, surnamed the Chaldean. I have understood that these events happened in the way above narrated.

Sozomen, Ecclesiastical History,
Book I, Chapter XVIII.