“Εν Τούτῳ Νίκα”
In this sign, you shall conquer. Thus, according to one account, Constantine is victorious at the Battle of the Milvian Bridge while fighting under the sign of the cross. It paved the way for Constantine’s conversion and the eventual establishment of Christianity in the West.
Yet the conversion of Constantine is troubling. If the vision and promise are true, it means God affected Constantine’s conversion by promising a victory in battle, which is more in line with the growth of Islam than Christianity.