Philip, who is accused by the historians of being the author of Gordian's death, succeeded him on the throne in 244; but he is only known in the history of Egypt by his Alexandrian coins, which we find with the dates of each of the seven years of his reign, and these seem to prove that for one year he had been associated with Gordian in the purple. In the reign of Decius, which began in 249, the Christians of Egypt were again harassed by the zeal with which the laws against their religion were put in force. The persecution began by their fellow-citizens informing against them; but in the next year it was followed up by the prefect AEmilianus; and several Christians were summoned before the magistrate and put to death. Many fled for safety to the desert and to Mount Sinai, where they fell into a danger of a different kind; they were taken prisoners by the Saracens and carried away as slaves. Dionysius, the Bishop of Alexandria, himself fled from the storm, and was then banished to the village of Cephro in the desert. But his flight was not without some scandal to the Church, as there were not a few who thought that he was called upon by his rank at least to await, if not to court, the pains of martyrdom. Indeed, the persecution was less remarkable for the sufferings of the Christians than for the numbers who failed in their courage, and renounced Christianity under the threats of the magistrate. Dionysius, the bishop, who had shown no courage himself, was willing to pardon their weakness, and after fit proof of sorrow again to receive them as brethren. But his humanity offended the zeal of many whose distance from the danger had saved them from temptation; and it was found necessary to summon a council at Rome to settle the dispute. In this assembly the moderate party prevailed; and some who refused to receive back those who had once fallen away from the faith were themselves turned out of the Church. Dionysius had succeeded Heraclas in the bishopric, having before succeeded him as head of the catechetical school. He was the author of several works, written in defence of the trinitarian opinions, on the one hand against the Egyptian Gnostics, who said that there were eight, and even thirty, persons in the Godhead, and, on the other hand, against the Syrian bishop, Paul of Samosata, on the Euphrates, who said that Jesus was a man, and that the Word and Holy Spirit were not persons, but attributes, of God. But while Dionysius was thus engaged in a controversy with such opposite opinions, Egypt and Libya were giving birth to a new view of the trinity. Sabellius, Bishop of Ptolemais, near Cyrene, was putting forth the opinion that the Father, Son, and Holy Spirit were only three names for the one God, and that the creator of the world had himself appeared upon earth in the form of Jesus. Against this opinion Dionysius again engaged in controversy, arguing against Sabellius that Jesus was not the creator, but the first of created beings.