The Ecclesiastical History of Socrates Scholasticus

Jovian having returned from Persia, ecclesiastical commotions were again renewed: for those who presided over the churches endeavored to anticipate each other, in the hope that the emperor would attach himself to their own tenets. He however had from the beginning adhered to the homoousian faith, and openly declared that he preferred this to all others. Moreover, he wrote letters to and encouraged Athanasius bishop of Alexandria, who immediately after Julian’s death had recovered the Alexandrian church, and at that time gaining confidence from the letters [spoken of] put away all fear. The emperor further recalled from exile all those prelates whom Constantius had banished, and who had not been re-established by Julian. Moreover, the pagan temples were again shut up, and they secreted themselves wherever they were able. The philosophers also laid aside their palliums, and clothed themselves in ordinary attire. That public pollution by the blood of victims, which had been profusely lavished even to disgust in the reign of Julian, was now likewise taken away.