General Councils were called together by the Christian emperors, and, from the nature of their constitution, were not possible until all or nearly all the Christian world was governed by a ruler professing the Faith of Christ; nor has such a general synod been held since the breaking up of the universal empire of Rome helped to overthrow the external unity of the Church[1]. [Sidenote: Their number.] Four General Councils are officially {70} acknowledged by the Church of England as binding on her members, and to these are commonly added two, held somewhat later at Constantinople. [Sidenote: I. Council.] I. The First General Council was called together by Constantine the Great, A.D. 325. It was held at Nicaea in Bithynia, and was attended by 318 Bishops. The great work of this Council was the positive and explicit assertion of what the Church had always implicitly believed concerning the Nature of our Divine Lord, and His Oneness with the Father. It was at this Nicene Council that the great St. Athanasius, then only a deacon, first distinguished himself by his opposition to the heresies of Arius. The teaching of the Council was embodied in the creed which is known to us as the Nicene Creed[2], and which was signed by all the assembled Bishops with only two exceptions, these being probably personal friends of Arius. Besides the condemnation of Arius, the Council settled the time of keeping Easter, and passed twenty Canons which were confirmed by the Emperor. [Sidenote: II. Council.] II. The Second General Council was held at Constantinople, A.D. 381, in the reign of Theodosius the Great. It was summoned principally to condemn the heresy of Macedonius, who had been Patriarch of Constantinople, and who had added to the Arian heresy a denial of the Divinity of God the Holy Ghost. At this Council 150 Bishops were present, and it is especially remarkable for having completed the Creed of Nicaea[3], which is hence also called the Creed of Constantinople. {71} [Sidenote: III. Council.] III. The Third General Council was summoned by the Emperor Theodosius the Younger, A.D. 431, and met at Ephesus. It was held to consider the heresy of Nestorius, Patriarch of Constantinople, who taught that the Blessed Virgin was the Mother of our Lord's Human Nature only, and that, therefore, the title of Theotokos, or "Mother of God," ought not to be given her. This assertion was, in fact, only a refinement of Arianism, implying as it did that our Saviour had not always been God as well as Man, and it was accordingly condemned by the Council, Nestorius being at the same time deposed from his see. [Sidenote: IV. Council.] IV. The Fourth General Council met at Chalcedon during the reign of the Emperor Marcian, A.D. 451. Six hundred and thirty Bishops assembled at it and condemned the false teaching of Eutyches, who asserted that our Blessed Lord was God only, and not Man also. [Sidenote: V. Council.]