A History of Christianity: The First Three Thousand Years

by Diarmaid MacCulloch

Constantine himself told Eusebius of Caesarea that one of the crucial experiences in his Milvian Bridge victory had been a vision of ‘a cross of light in the heavens, above the sun, and an inscription, CONQUER BY THIS’.4 The association of the sun and the Cross was no accident. A military leader and a ruthless politician rather than an abstract thinker, Constantine was probably not very clear about the difference between a universal sun cult and the Christian God – at least to start with. As he began showering privileges on the Christian clergy, it is unlikely that many of them considered whether the Emperor should be given a theological cross-examination before they accepted their unexpected gifts. What interested Constantine was the Christian God rather than the Christians. It would hardly have been worth his while from a political point of view to court favour from Christians, for, however one calculates their numbers, they were still a decided minority in the empire, and noticeably weak in those crucial power blocs, the army and the Western aristocracy.