The Church grew up with only a loose form of organization. Each local congregation was for a while autonomous, and it was the local constitution that first took a definite and fixed form. In the first centuries local customs naturally varied, and conflicts were sure to arise when various hitherto isolated churches came into closer contact and the sense of solidarity deepened. The first clash of opposing customs occurred over the date of Easter, as to which marked differences existed between the churches of Asia Minor, at that time the most flourishing part of the Church, and the churches of the West, especially with the church of Rome, the strongest local church of all. The course of the controversy is sufficiently stated in the following selection from Eusebius. The outcome was the practical isolation of the churches of Asia Minor for many years. The controversy was not settled, and the churches of Asia Minor did not again play a prominent part in the Church until the time of Constantine and the Council of Nicæa, 325 (see § 62, _b_), although a provisional adjustment of the difficulty, so far as the West was concerned, took place shortly before, at the Council of Arles (see § 62, _a_, 2). Eusebius, _Hist. Ec._, V, 23, 24. (MSG, 20:489.) Mirbt, n. 22, and in Kirch, n. 78 _ff._ A brief extract from the following may be found above in § 3 in a somewhat different connection. Ch. 23. At this time a question of no small importance arose. For the parishes [_i.e._, dioceses in the later sense of that word] of all Asia, as from an older tradition, held that the fourteenth day of the moon, being the day on which the Jews were commanded to sacrifice the lamb, should be observed as the feast of the Saviour’s passover, and that it was necessary, therefore, to end their fast on that day, on whatever day of the week it might happen to fall. It was not, however, the custom of the churches elsewhere to end it at this time, but they observed the practice, which from apostolic tradition has prevailed to the present time, of ending the fast on no other day than that of the resurrection of the Saviour. Synods and assemblies of bishops were held on this account, and all with one consent, by means of letters addressed to all, drew up an ecclesiastical decree that the mystery of the resurrection of the Lord from the dead should be celebrated on no other day than on the Lord’s Day, and that we should observe the close of the paschal fast on that day only. There is still extant a writing of those who were then assembled in Palestine, over whom Theophilus, bishop of the parish of Cæsarea, and Narcissus, Bishop of Jerusalem, presided; also another of those who were likewise assembled at Rome, on account of the same question, which bears the name of Victor; also of the bishops in Pontus, over whom Palmas, as the oldest, presided; and of the parishes in Gaul, of which Irenæus was bishop; and of those in Osrhoene and the cities there; and a personal