Here belongs the familiar story of the miraculous cross. The precise day and place cannot be fixed, but the event must have occurred shortly before the final victory over Maxentius in the neighborhood of Rome. As this vision is one of the most noted miracles in church history, and has a representative significance, it deserves a closer examination. It marks for us on the one hand the victory of Christianity over paganism in the Roman empire, and on the other the ominous admixture of foreign, political, and military interests with it. We need not be surprised that in the Nicene age so great a revolution and transition should have been clothed with a supernatural character. The occurrence is variously described, and is not without serious difficulties. Lactantius, the earliest witness, some three years after the battle, speaks only of a dream by night, in which the emperor was directed (it is not stated by whom, whether by Christ, or by an angel) to stamp on the shields of his soldiers 'the heavenly sign of God,' that is, the cross with the name of Christ, and thus to go forth against his enemy. Eusebius, on the contrary, gives a more minute account, on the authority of a subsequent private communication of the aged Constantine himself under oath--not, however, till the year 338, a year after the death of the emperor, his only witness, and twenty-six years after the event. On his march from Gaul to Italy (the spot and date are not specified), the emperor, while earnestly praying to the true God for light and help at this critical time, saw, together with his army, in clear daylight toward evening, a shining cross in the heavens above the sun, with the inscription: '_By this conquer;_' and in the following night Christ himself appeared to him while he slept, and directed him to have a standard prepared in the form of this sign of the cross, and with that to proceed against Maxentius and all other enemies. This account of Eusebius, or rather of Constantine himself, adds to the night dream of Lactantius the preceding vision of the day, and the direction concerning the standard, while Lactantius speaks of the inscription of the initial letters of Christ's name on the shields of the soldiers. According to Rufinus, a later historian, who elsewhere depends entirely on Eusebius, and can therefore not be regarded as a proper witness in the case, the sign of the cross appeared to Constantine in a dream (which agrees with the account of Lactantius), and upon his awaking in terror, an angel (not Christ) exclaimed to him: '_Hoc vince._' Lactantius, Eusebius, and Rufinus are the only Christian writers of the fourth century, who mention the apparition. But we have besides one or two heathen testimonies, which, though vague and obscure, still serve to strengthen the evidence in favor of some actual occurrence. The contemporaneous orator Nazarius, in a panegyric upon the emperor, pronounced March 1,