Historia Arianorum

Accordingly he banished, as I said before the genuine Bishops, because they would not profess impious doctrines, to suit his own pleasure; and so he now sent Count Heraclius to proceed against Athanasius, who has publicly made known his decrees, and announced the command of the Emperor to be, that unless they complied with the instructions contained in his letters, their bread should be taken away, their idols overthrown, and the persons of many of the city-magistrates and people delivered over to certain slavery.

After threatening them in this manner, he was not ashamed to declare publicly with a loud voice, 'The Emperor disclaims Athanasius, and has commanded that the Churches be given up to the Arians.' And when all wondered to hear this, and made signs to one another, exclaiming, 'What! Has Constantius become a heretic?' instead of blushing as he ought, the man all the more obliged the senators and heathen magistrates and wardens of the idol temples to subscribe to these conditions, and to agree to receive as their Bishop whomsoever the Emperor should send them.

Of course Constantius was strictly upholding the Canon of the Church, when he caused this to be done; when instead of requiring letters from the Church, he demanded them of the market-place, and instead of the people he asked them of the wardens of the temples. He was conscious that he was not sending a Bishop to preside over Christians, but a certain intruder for those who subscribed to his terms.