The victory seemed won when the last great enemy was driven into the desert, and the intriguers hasted to the spoil. They forgot that the West was only overawed for the moment, that Egypt was devoted to its patriarch, that there was a strong opposition in the East, and that the conservatives, who had won the battle for them, were not likely to take up Arianism at the bidding of their unworthy leaders. Amongst the few prominent Eusebians of the West were two disciples of Arius who held the neighbouring bishoprics of Mursa and Singidunum, the modern Belgrade. Valens and Ursacius were young men in 335, but old enough to take a part in the infamous Egyptian commission of the council of Tyre. Since that time they had been well to the front in the Eusebian plots. In 347, however, they had found it prudent to make their peace with Julius of Rome by confessing the falsehood of their charges against Athanasius. Of late they had been active on the winning side, and enjoyed much influence with Constantius. Thinking it now safe to declare more openly for Arianism, they called a few bishops to Sirmium in the summer of 357, and issued a manifesto of their belief for the time being, to the following general effect. 'We acknowledge one God the Father, also His only Son, Jesus Christ our Lord. But two Gods must not be preached. The Father is without beginning, invisible, and in every respect greater than the Son, who is subject to Him together with the creatures. The Son is born of the Father, God of God, by an inscrutable generation, and took flesh or body, that is, man, through which he suffered. The words essence, of the same essence, of like essence, ought not to be used, because they are not found in Scripture, and because the divine generation is beyond our understanding.' Here is something to notice besides the repeated hints that the Son is no better than a creature. It was a new policy to make the mystery in the manner of the divine generation an excuse for ignoring the fact. In this case the plea of ignorance is simply impertinent.
Its results in general.
The Sirmian manifesto is the turning-point of the whole contest. Arianism had been so utterly crushed at Nicæa that it had never again till now appeared in a public document. Henceforth the conservatives were obliged in self-defence to look for a Nicene alliance against the Anomœans. Suspicions and misunderstandings, and at last mere force, delayed its consolidation till the reign of Theodosius, but the Eusebian coalition fell to pieces the moment Arianism ventured to have a policy of its own.
(1.) In the West.
Ursacius and Valens had blown a trumpet which was heard from one end of the Empire to the other. Its avowal of Arianism caused a stir even in the West. Unlike the creeds of Antioch, it was a Western document, drawn up in Latin by Western bishops. The spirit of the West was fairly roused, now that the battle was clearly for the faith. The bishops of Rome, Cordova, Trier, Poitiers, Toulouse, Calaris, Milan, and Vercellæ were in exile, but Gaul was now partly shielded from persecution by the varying fortunes of Julian's Alemannic war. Thus everything increased the ferment. Phœbadius of Agen took the lead, and a Gaulish synod at once condemned the 'blasphemy.'
(2.) In the East.
If the Sirmian manifesto disturbed the West, it spread dismay through the ranks of the Eastern conservatives. Plain men were weary of the strife, and only the fishers in troubled waters wanted more of it. Now that Marcellus and Photinus had been expelled, the Easterns looked for rest. But the Sirmian manifesto opened an abyss at their feet. The fruits of their hard-won victories over Sabellianism were falling to the Anomœans. They must even defend themselves, for Ursacius and Valens had the Emperor's ear. As if to bring the danger nearer home to them, Eudoxius the new bishop of Antioch, and Acacius of Cæsarea convened a Syrian synod, and sent a letter of thanks to the authors of the manifesto.
Synod of Ancyra (Lent, 358).
Next spring came the conservative reply from a knot of twelve bishops who had met to consecrate a new church for Basil of Ancyra. But its weight was far beyond its numbers. Basil's name stood high for learning, and he more than any man could sway the vacillating Emperor. Eustathius of Sebastia was another man of mark. His ascetic eccentricities, long ago condemned by the council of Gangra, were by this time forgotten or considered harmless. Above all, the synod represented most of the Eastern bishops. Pontus indeed was devoted to conservatism, and the decided Arianizers were hardly more than a busy clique even in Asia and Syria. Its decisions show the awkwardness to be expected from men who have had to make a sudden change of front, and exhibit well the transition from Eusebian to Semiarian conservatism. They seem to start from the declaration of the Lucianic creed, that the Lord's sonship is not an idle name. Now if we reject materialising views of the Divine Sonship, its primary meaning will be found to lie in similarity of essence. On this ground the Sirmian manifesto is condemned. Then follow eighteen anathemas, alternately aimed at Aetius and Marcellus. The last of these condemns the Nicene of one essence—clearly as Sabellian, though no reason is given.
Victory of the Semiarians.