By this time Hilary had definitely taken his side, and it will be well to consider his relation to the parties in the controversy. And first as to Arianism. As we have seen, Arian prelates were now in possession of the two great sees of Arles and Milan in his own neighbourhood; and Arianisers of different shades, or at least men tolerant of Arianism, held a clear majority of the Eastern bishoprics, except in the wholly Catholic Egypt. But it is certain that, in the West at any rate, the fundamental difference of the Arian from the Catholic position was not generally recognised. Arian practice and Arian practical teaching was indistinguishable from Catholic; and unless ultimate principles were questioned, Catholic clergy might work, and the multitudes of Catholic laity might live and die, without knowing that their bishop’s creed was different from their own. The Abbé Duchesne has made the very probable suggestion that the stately Ambrosian ritual of Milan was really introduced from the East by Auxentius, the Arian intruder from Cappadocia, of whom we have spoken. Arian Baptism and the Arian Eucharist were exactly the same as the Catholic. They were not sceptical; they accepted all current beliefs or superstitions, and had their own confessors and workers of miracles.
The Bible was common ground to both parties: each professed its confidence that it had the support of Scripture. “No false system ever struck more directly at the life of Christianity than Arianism. Yet after all it held aloft the Lord’s example as the Son of Man, and never wavered in its worship of Him as the Son of God.” And the leaders of this school were in possession of many of the great places of the Church, and asserted that they had the right to hold them; that if they had not the sole right, at least they had as good a right as the Catholics, to be bishops, and yet to teach the doctrine that Christ was a creature, not the Son. And what made things worse was that they seemed to be at one with the Catholics, and that it was possible, and indeed almost inevitable, that the multitudes who did not look below the surface should be satisfied to take them for what they seemed. Many of the Arians no doubt honestly thought that their position was a tenable one, and held their offices with a good conscience; but we cannot wonder that men like Athanasius and Hilary, aware of the sophistical nature of many of the arguments used, and knowing that some, at least, of the leaders were unscrupulous adventurers, should have regarded all Arianism and all Arians as deliberately dishonest. It seemed incredible that they could be sincerely at home in the Church, and intolerable that they should have the power of deceiving the people and persecuting true believers. It is against Arianism in the church that Hilary’s efforts are directed, not against Arianism as an external heresy. He ignores heresies outside the Church as completely as does Cyprian; they xiiare outside, and therefore he has nothing to do with them. But Arianism, as represented by an Auxentius or a Saturninus, is an internum malum;and to the extirpation of this ‘inward evil’ the remaining years of his life were to be devoted.
His own devotion, from the time of his conversion to the Catholic Faith, which almost all around him held, was not the less sincere because it did not find its natural expression in the Nicene Creed. That document, which primarily concerned only bishops, and them only when their orthodoxy was in question, was hardly known in the West, where the bishops had as yet had little occasion for doubting one another’s faith. Hilary had never heard it,—he can hardly have avoided hearing of it,—till just before his exile. In his earlier conflicts he rarely mentions it, and when he does it is in connection with the local circumstances of the East. In later life he, with Western Christendom at large, recognised its value as a rallying point for the faithful; but even then there is no attachment to the Creed for its own sake. It might almost seem that the Creed, by his defence of which Athanasius has earned such glory, owed its original celebrity to him rather than he to it. His unjust persecution and heroic endurance excited interest in the symbol of which he was the champion. If it were otherwise, there has been a strange conspiracy of silence among Western theologians. In their great works on the Trinity, Hilary most rarely, and Augustine never, allude to it; the Council of Aquileia, held in the same interests and almost at the same time as that of Constantinople in 381, absolutely ignores it. The Creed, in the year 355, was little known in the West and unpopular in the East. Even Athanasius kept it somewhat in the background, from reasons of prudence, and Hilary’s sympathies, as we shall see, were with the Eastern School which could accept the truth, though they disliked this expression of it.
The time had now come for Hilary, holding these views of Arianism and of the Faith, to take an active part in the conflict. We have seen that he was not at Milan; he was therefore not personally compromised, but the honour of the Church compelled him to move. He exerted himself to induce the bishops of Gaul to withdraw from communion with Saturninus, and with Ursacius and Valens, disciples of Arius during his exile on the banks of the Danube thirty years before, and now high in favour with Constantius, and his ministers, we might almost say, for the ecclesiastical affairs of the Western provinces. We do not know how many bishops were enlisted by Hilary against Saturninus. It is probable that not many would follow him in so bold a venture; even men of like mind with himself might well think it unwise. It was almost a revolutionary act; an importation of the methods of Eastern controversy into the peaceful West, for this was not the constitutional action of a synod but the private venture of Hilary and his allies. However righteous and necessary, in the interests of morality and religion, their conduct may have seemed to them, to Constantius and his advisers it must have appeared an act of defiance to the law, both of Church and State. And Hilary would certainly not win favour with the Emperor by his letter of protest, the First Epistle to Constantius, written about the end of the year 355. He adopts the usual tone of the time, that of exaggerated laudation and even servility towards the Emperor. Such language was, of course, in great measure conventional; we know from Cicero’s letters how little superlatives, whether of flattery or abuse, need mean, and language had certainly not grown more sincere under the Empire. The letter was, in fact, a singularly bold manifesto, and one which Hilary himself must have foreseen was likely to bring upon him the xiiipunishment which had befallen the recusants at Arles and Milan. He begins (§ 1) in studiously general terms, making no mention of the provinces in which the offenses were being committed, with a complaint of the tyrannical interference of civil officers in religious matters. If there is to be peace (§ 2), there must be liberty; Catholics must not be forced to become Arians.
The voice of resistance was being raised; men were beginning to say that it was better to die than to see the faith defiled at the bidding of an individual. Equity required that God-fearing men should not suffer by compulsory intercourse with the teachers of execrable blasphemy, but be allowed bishops whom they could obey with a good conscience. Truth and falsehood, light and darkness could not combine. He entreated the Emperor to allow the people to choose for themselves to what teachers they would listen, with whom they would join in the Eucharist and in prayer for him. Next (§ 3) he denies that there is any purpose of treason, or any discontent. The only disturbance is that caused by Arian propagators of heresy, who are busily engaged in misleading the ignorant. He now (§ 4) prays that the excellent bishops who have been sent into exile may be restored; liberty and joy would be the result. Then (§ 5) he attacks the modern and deadly Arian pestilence. Borrowing, somewhat incautiously, the words of the Council of Sardica, now twelve years old, he gives a list of Arian chiefs which ends with “those two ignorant and unprincipled youths, Ursacius and Valens.” Communion with such men as these, even communion in ignorance, is a participation in their guilt, a fatal sin. He proceeds, in § 6, to combine denunciation of the atrocities committed in Egypt with a splendid plea for liberty of conscience; it is equally vain and wicked to attempt to drive men into Arianism, and an enforced faith is, in any case, worthless. The Arians (§ 7) were themselves legally convicted long ago and Athanasius acquitted; it is a perversion of justice that the condemned should now be intriguing against one so upright and so faithful to the truth. And lastly (§ 8) he comes to the wrong just done at Milan, and tells the well-known story of the violence practiced upon Eusebius of Vercelli and others in the ‘Synagogue of malignants,’ as he calls it. Here also he takes occasion to speak of Paulinus of Treves, exiled for his resistance at Arles two years before, where he “had withstood the monstrous crimes of those men.” The conclusion of the letter is unfortunately lost, and there are one or more gaps in the body of it; these, we may judge, would only have made it more unacceptable to Constantius.