The idea of a test creed.
It seems to have been understood that the council was to settle the question by drawing up a creed as a test for bishops. Here was a twofold novelty. In the first place, Christendom as a whole had as yet no written creed at all. The so-called Apostles' Creed may be older than 340, but then it first appears, and only as a personal confession of the heretic Marcellus. Every church taught its catechumens the historic outlines of the faith, and referred to Scripture as the storehouse and final test of doctrine. But that doctrine was not embodied in forms of more than local currency. Thus different churches had varying creeds to form the basis of the catechumen's teaching, and placed varying professions in his mouth at baptism. Some of these were ancient, and some of widespread use, and all were much alike, for all were couched in Scripture language, variously modelled on the Lord's baptismal formula (Matt. xxviii. 19). At Jerusalem, for example, the candidate declared his faith:
in the Father;
in the Son;
in the Holy Spirit;
and in one Baptism of Repentance.
The Roman form, as approximately given by Novatian in the middle of the third century, was,
I believe in God the Father,
the Lord Almighty;
in Christ Jesus his Son,
the Lord our God;
and in the Holy Spirit.
Though these local usages were not disturbed, it was none the less a momentous step to draw up a document for all the churches. Its use as a test for bishops was a further innovation. Purity of doctrine was for a long time guarded by Christian public opinion. If a bishop taught novelties, the neighbouring churches (not the clergy only) met in conference on them, and refused his communion if they proved unsound. Of late years these conferences had been growing into formal councils of bishops, and the legal recognition of the churches by Gallienus (261) enabled them to take the further step of deposing false teachers. Aurelian had sanctioned this in the case of Paul of Samosata by requiring communion with the bishops of Rome and Italy as the legal test of Christian orthodoxy (272) there were practical difficulties in this plan of government by councils. A strong party might dispute the sentence, or even get up rival councils to reverse it. The African Donatists had given Constantine trouble enough of this sort some years before; and now that the Arians were following their example, it was evident that every local quarrel would have an excellent chance of becoming a general controversy. In the interest, therefore, of peace and unity, it seemed better to adopt a written test. If a bishop was willing to sign it when asked, his subscription should be taken as a full reply to every charge of heresy which might be made against him. On this plan, whatever was left out of the creed would be deliberately left an open question in the churches. Whatever a bishop might choose to teach (Arianism, for example), he would have full protection, unless some clause of the new creed expressly shut it out. This is a point which must be kept in view when we come to estimate the conduct of Athanasius. Thus however Constantine hoped to make the bishops keep the peace over such trumpery questions as this of Arianism seemed to him. Had it been a trumpery question, his policy might have had some chance of lasting success. For the moment, at any rate, all parties accepted it, so that the council had only to settle the wording of the new creed.
Arianism condemned.
The Arians must have come full of hope to the council. So far theirs was the winning side. They had a powerful friend at court in the Emperor's sister, Constantia, and an influential connection in the learned Lucianic circle. Reckoning also on the natural conservatism of Christian bishops, on the timidity of some, and on the simplicity or ignorance of others, they might fairly expect that if their doctrine was not accepted by the council, it would at least escape formal condemnation. They hoped, however, to carry all before them. An Arianizing creed was therefore presented by a score or so of bishops, headed by the courtier Eusebius of Nicomedia. They soon found their mistake. The Lord's divinity was not an open question in the churches. The bishops raised an angry clamour and tore the offensive creed in pieces. Arius was at once abandoned by nearly all his friends.
Eusebius proposes the creed of Cæsarea.
This was decisive. Arianism was condemned almost unanimously, and nothing remained but to put on record the decision. But here began the difficulty. Marcellus and Athanasius wanted it put into the creed, but the bishops in general saw no need of this. A heresy so easily overcome could not be very dangerous. There were only half a dozen Arians left in the council, and too precise a definition might lead to dangers on the Sabellian side. At this point the historian Eusebius came forward. Though neither a great man nor a clear thinker, he was the most learned student of the East. He had been a confessor in the persecution, and now occupied an important see, and stood high in the Emperor's favour. With regard to doctrine, he held a sort of intermediate position, regarding the Lord not indeed as a creature, but as a secondary God derived from the will of the Father. This, as we have seen, was the idea then current in the East, that it is possible to find some middle term between the creature and the highest deity. To a man of this sort it seemed natural to fall back on the authority of some older creed, such as all could sign. He therefore laid before the council that of his own church of Cæsarea, as follows:—