Historia Arianorum

In the next place they went in a body to the Emperor Constantius, and besought him, saying, 'When we first made our request to you, we were not believed; for we told you, when you sent for Athanasius, that by inviting him to come forward, you are expelling our heresy. For he has been opposed to it from the very first, and never ceases to anathematize it. He has already written letters against us into all parts of the world, and the majority of men have embraced communion with him; and even of those who seemed to be on our side, some have been gained over by him, and others are likely to be.

And we are left alone, so that the fear is, lest the character of our heresy become known, and henceforth both we and you gain the name of heretics. And if this come to pass, you must take care that we be not classed with the Manichæans. Therefore begin again to persecute, and support the heresy, for it accounts you its king.' Such was the language of their iniquity. And the Emperor, when in his passage through the country on his hasty march against Magnentius, he saw the communion of the Bishops with Athanasius, like one set on fire, suddenly changed his mind, and no longer remembered his oaths, but was alike forgetful of what he had written and regardless of the duty he owed his brother.

For in his letters to him, as well as in his interview with Athanasius, he took oaths that he would not act otherwise than as the people should wish, and as should be agreeable to the Bishops. But his zeal for impiety caused him at once to forget all these things. And yet one ought not to wonder that after so many letters and so many oaths Constantius had altered his mind, when we remember that Pharaoh of old, the tyrant of Egypt, after frequently promising and by that means obtaining a remission of his punishments, likewise changed, until he at last perished together with his associates.