The Glorification of Saint Eusebius, a fresco on the ceiling of the church that bears his name in Rome (Anton Raphael Mengs, 1757). One of the angels is holding a titulus that reads ΟΜΟΟΥΣΙΟΣ ΤΩ ΠΑΤΡΙ, "consubstantial with the Father," an expression of the orthodox faith for which Saint Eusebius was martyred.











