at the time of the Exodus also. Michael is also said to have destroyed the army of Sennacherib. Christianity Early Christian views and devotions Michael was venerated as a healer in Phrygia (modern-day Turkey). The earliest and most famous sanctuary to Michael in the ancient Near East was also associated with healing waters. It was the Michaelion built in the early 4th century by Constantine the Great at Chalcedon, on the site of an earlier temple called Sosthenion. Epiphanius of Salamis (c. 310–320 – 403) referred in his Coptic-Arabic Hexaemeron to Michael as a replacement of Satan. Accordingly, after Satan fell, Michael was appointed to the function Satan served when he was still one of the noble angels. A painting of the Archangel slaying a serpent became a major art piece at the Michaelion after Constantine defeated Licinius near there in 324. This contributed to the standard iconography that developed of Archangel Michael as a warrior saint slaying a dragon. The Michaelion was a magnificent church and in time became a model for hundreds of other churches in Eastern Christianity; these spread devotions to the Archangel. In the 4th century, Saint Basil the Great's homily (De Angelis) placed Saint Michael over all the angels. He was called "Archangel" because he heralds other angels, the title Ἀρχανγέλος (archangelos) being used of him in Jude 1:9. Into the 6th century, the view of Michael as a healer continued in Rome; after a plague, the sick slept at night in the church of Castel Sant'Angelo (dedicated to him for saving Rome), waiting for his manifestation. In the 6th century, the growth of devotions to Michael in the Western Church was expressed by the feasts dedicated to him, as recorded in the Leonine Sacramentary. The 7th-century Gelasian Sacramentary included the feast "S. Michaelis Archangeli", as did the 8th-century Gregorian Sacramentary. Some of these documents refer to a Basilica Archangeli (no longer extant) on via Salaria in Rome. The angelology of Pseudo-Dionysius, which was widely read as of the 6th century, gave Michael a rank in the celestial hierarchy. Later, in the 13th century, others such as Bonaventure believed that he is the prince of the Seraphim, the first of the nine angelic orders. According to Thomas Aquinas (Summa Ia. 113.3), he is the Prince of the last and lowest choir, the Angels. Catholicism Catholics often refer to Michael as "Holy Michael, the Archangel" or