Of the Synod which was held at Nicæa in Bithynia, and the Creed there put forth
Such admirable and wise counsel did the emperor's letter contain. But the evil had become too strong both for the exhortations of the emperor, and the authority of him who was the bearer of his letter: for neither was Alexander nor Arius softened by this appeal; and moreover there was incessant strife and tumult among the people. Moreover another local source of disquietude had pre-existed there, which served to trouble the churches—the dispute namely in regard to the Passover, which was carried on in the regions of the East only. This arose from some desiring to keep the Feast more in accordance with the custom of the Jews; while others preferred its mode of celebration by Christians in general throughout the world. This difference, however, did not interfere with their communion, although their mutual joy was necessarily hindered. When, therefore, the emperor beheld the Church agitated on account of both of these causes, he convoked a General Council, summoning all the bishops by letter to meet him at Nicæa in Bithynia. Accordingly the bishops assembled out of the various provinces and cities; respecting whom Eusebius Pamphilus thus writes, word for word, in his third book of the life of Constantine:
'Wherefore the most eminent of the ministers of God in all the churches which have filled Europe, Africa, and Asia, were convened. And one sacred edifice, dilated as it were by God, contained within it on the same occasion both Syrians and Cilicians, Phœnicians, Arabs and Palestinians, and in addition to these, Egyptians, Thebans, Libyans, and those who came from Mesopotamia. At this synod a Persian bishop was also present, neither was the Scythian absent from this assemblage. Pontus also and Galatia, Pamphylia, Cappadocia, Asia and Phrygia, supplied those who were most distinguished among them. Besides, there met there Thracians and Macedonians, Achaians and Epirots, and even those who dwelt still further away than these, and the most celebrated of the Spaniards himself took his seat among the rest. The prelate of the imperial city was absent on account of age; but some of his presbyters were present and filled his place. Such a crown, composed as a bond of peace, the emperor Constantine alone has ever dedicated to Christ his Saviour, as a thank-offering worthy of God for victory over his enemies, having appointed this convocation among us in imitation of the Apostolic Assembly. For among them it is said were convened “devout men of every nation under heaven; Parthians, Medes and Elamites, and those who dwelt in Mesopotamia, Judæa and Cappadocia, Pontus and Asia, Phrygia and Pamphylia, Egypt and the part of Libya which is toward Cyrene, strangers from Rome also, both Jews and proselytes with Cretans and Arabs.” That congregation, however, was inferior in this respect, that all present were not ministers of God: whereas in this assembly the number of bishops exceeded three hundred; while the number of the presbyters, deacons, and acolyths and others who attended them was almost incalculable. Some of these ministers of God were eminent for their wisdom, some for the strictness of their life, and patient endurance [of persecution], and others united in themselves all these distinguished characteristics: some were venerable from their advanced age, others were conspicuous for their youth and vigor of mind, and others had but recently entered on their ministerial career. For all these the emperor appointed an abundant supply of daily food to be provided.'
Such is Eusebius' account of those who met on this occasion. The emperor having completed the festal solemnization of this triumph over Licinius, came also in person to Nice.
There were among the bishops two of extraordinary celebrity, Paphnutius, bishop of Upper Thebes, and Spyridon, bishop of Cyprus: why I have so particular referred to these two individuals, I shall state hereafter. Many of the laity were also present, who were practiced in the art of reasoning, and each eager to advocate the cause of his own party. Eusebius, bishop of Nicomedia, as was before said, sup ported the opinion of Arius, together with Theognis and Maris; of these the former was bishop of Nicæa, and Maris of Chalcedon in Bithynia. These were powerfully opposed by Athanasius, a deacon of the Alexandrian church, who was highly esteemed by Alexander his bishop, and on that account was much envied, as will be seen hereafter. Now a short time previous to the general assembling of the bishops, the disputants engaged in preparatory logical contests before the multitudes; and when many were attracted by the interest of their discourse, one of the laity, a confessor, who was a man of unsophisticated understanding, reproved these reasoners, telling them that Christ and his apostles did not teach us dialectics, art, nor vain subtlies, but simple-mindedness, which is preserved by faith and good works. As he said this, all present admired the speaker and assented to the justice of his remarks; and the disputants themselves, after hearing his plain statement of the truth, exercised a greater degree of moderation: thus then was the disturbance caused by these logical debates suppressed at this time.
On the following day all the bishops were assembled together in one place; the emperor arrived soon after and on his entrance stood in their midst, and would not take his place, until the bishops by bowing intimated their desire that he should be seated: such was the respect and reverence which the emperor entertained for these men. When a silence suitable to the occasion had been observed, the emperor from his seat began to address them words of exhortation to harmony and unity, and entreated each to lay aside all private pique. For several of them had brought accusations against one another and many had even presented petitions to the emperor the day before. But he, directing their attention to the matter before them, and on account of which they were assembled, ordered these petitions to be burnt; merely observing that 'Christ enjoins him who is anxious to obtain forgiveness, to forgive his brother.' When therefore he had strongly insisted on the maintenance of harmony and peace, he sanctioned again their purpose of more closely investigating the questions at issue. But it may be well to hear what Eusebius says on this subject, in his third book of the Life of Constantine. His words are these:
'A variety of topics having been introduced by each party and much controversy being excited from the very commencement, the emperor listened to all with patient attention, deliberately and impartially considering whatever was advanced. He in part supported the statements which were made on either side, and gradually softened the asperity of those who contentiously opposed each other, conciliating each by his mildness and affability. And as he addressed them in the Greek language, for he was not unacquainted with it, he was at once interesting and persuasive, and wrought conviction on the minds of some, and prevailed on others by entreaty, those who spoke well he applauded. And inciting all to unanimity at length he succeeded in bringing them into similarity of judgment, and conformity of opinion on all the controverted points: so that there was not only unity in the confession of faith, but also a general agreement as to the time for the celebration of the feast of Salvation. Moreover the doctrines which had thus the common consent, were confirmed by the signature of each individual.'
Source: Ecclesiastical History (New Advent)