Perhaps his most famous miracle is the salvation of the church at Colossae. Here a number of pagans tried to destroy this church by diverting the flow of two rivers directly into its path. However, the Archangel appeared amongst the waters, and, carrying a cross, channeled the rivers underground so that the ground the church stood on would not be destroyed. The spring which came forth after this event is said to have special healing powers.
Michael also has been associated with healing in other cases, as well as his primary role as leader of the Church Militant. He has been said to appear to Emperor Constantine the Great (d. 337) at Constantinople, to have intervened in assorted battles, and appeared, sword in hand, over the mausoleum of Hadrian, in apparent answer to the prayers of Pope St. Gregory I the Great (r. 590-604) that a plague in Rome should cease.
In Ireland, it is custom to make a "Michaelmas" pie on the feast of the Archangel Michael.
Archangel Michael is also the patron saint of police officers, military, grocers, mariners, paratroopers, and sickness.