The celebrated Eusebius, bishop of Cæsarea, known by his writings, which evince no great discernment, strongly accused Eustatius, bishop of Antioch, of being a Sabellian; and Eustatius accused Eusebius of being an Arian. A council was assembled at Antioch; Eusebius gained his cause; Eustatius was displaced; and the See of Antioch was offered to Eusebius, who would not accept it; the two parties armed against each other, and this was the prelude to controversial warfare. Constantine, who had banished Arius for not believing in the consubstantial Son, now banished Eustatius for believing in Him; nor are such revolutions uncommon.
St. Athanasius was then bishop of Alexandria. He would not admit Arius, whom the emperor had sent thither, into the town, saying that "Arius was excommunicated; that an excommunicated man ought no longer to have either home or country; that he could neither eat nor sleep anywhere; and that it was better to obey God than man." A new council was forthwith held at Tyre, and new _lettres de cachet_ were issued. Athanasius was removed by the Tyrian fathers and banished to Trèves. Thus Arius, and Athanasius, his greatest enemy, were condemned in turn by a man who was not yet a Christian:
The two factions alike employed artifice, fraud, and calumny, according to the old and eternal usage. Constantine left them to dispute and cabal, for he had other occupations. It was at that time that this _good prince_ assassinated his son, his wife, and his nephew, the young Licinius, the hope of the empire, who was not yet twelve years old.
Under Constantine, Arius' party was constantly victorious. The opposite party has unblushingly written that one day St. Macarius, one of the most ardent followers of Athanasius, knowing that Arius was on the way to the cathedral of Constantinople, followed by several of his brethren, prayed so ardently to God to confound this heresiarch that God could not resist the prayer; and immediately all Arius' bowels passed through his fundament--which is impossible. But at length Arius died.
Constantine followed him a year afterwards, and it is said he died of leprosy. Julian, in his "Cæsars," says that baptism, which this emperor received a few hours before his death, cured no one of this distemper.