When the Homily is about Immunology

St. Constantine's New Churches

From Eusebeus of Caesarea's Ecclesiastical History (very early 4th century) in which he writes about the legalization of Christianity (emphasis mine):

A clear and luminous day, without even the smallest cloud, illuminates with rays of divine light the churches of Christ in the whole universe...Churches are again rebuilt to a great height and have a much better appearance than the ancient, destroyed churches...Feasts of renovation and consecration of new churches are beginning to be celebrated in the town...

Illuminating words for someone to use in or around 325AD - especially since some people's histories insist that it was Constantine who was the first to start initiating Christian church buildings. Well, it seems in reality that Christian Church buildings were an ancient thing by the 4th century!