Red-Letter Day
Michaelmas
September 29
also known as Michaelmas, Feast of St. Michael the Archangel, St. Michael and All Angels, The Feast of Angels
The Feast of Holy Michael and All Angels—commonly called Michaelmas—celebrates the ministry of angels as messengers and servants of God, with particular honor to Michael, the archangel who according to Daniel, Jude, and Revelation leads the heavenly host in battle against the powers of evil. The feast encompasses all the angelic orders—cherubim, seraphim, archangels, and angels—and affirms the Church's belief that the visible and invisible worlds are united in the worship and service of God.
The church’s reflection on the nature and ministry of angels began early and runs deep. Athenagoras of Athens, writing his Legatio to the Emperor Marcus Aurelius around 177, described God as having distributed angels and ministers to their several posts, appointing them to maintain the order of creation — among the earliest systematic Christian statements about angelic function. Augustine’s City of God (Books XI–XII) made the decisive contribution to Western angelology: he taught that the difference between the good angels and the fallen arose not from their created nature, which was identical, but from the direction of their wills. The angels who fell did not lack anything God gave them; they turned away from the good they had been given. This insight — that will, not nature, determines angelic destiny — became foundational for subsequent theology.
Pseudo-Dionysius the Areopagite, writing around 500, produced the Celestial Hierarchy, the most influential systematization of the angelic orders. Drawing on Paul’s language in Ephesians and Colossians, he arranged the angels in three triads of three ranks each: Seraphim, Cherubim, and Thrones nearest to God; Dominations, Virtues, and Powers in the middle; Principalities, Archangels, and Angels closest to humanity. Gregory the Great, in his celebrated Homily 34 on the Gospels — preached on the feast of Michael — took up and modified this scheme, establishing the principle that “the word ‘angel’ denotes a function rather than a nature”: these beings are defined by their ministry as God’s messengers, not by a single fixed essence. Gregory’s homily became the standard Western catechesis on angelology and shaped how the feast itself was understood for centuries. John of Damascus synthesized the Eastern tradition in his De Fide Orthodoxa, defining an angel as “an intelligent essence, in perpetual motion, with free will, incorporeal, ministering to God, having obtained by grace an immortal nature” — the key qualification being by grace, not by nature, echoing Augustine’s emphasis that creaturely goodness depends on the Creator’s sustaining gift.
The veneration of Michael specifically is ancient in both East and West. The earliest known church dedicated to him — the Michaelion — was built by Constantine at Sosthenion near Constantinople in the fourth century. Sozomen, writing around 440, records healings at the shrine and describes it as among the most frequented in the city. In the West, Michael’s veneration was associated particularly with Monte Gargano in southern Italy, where an apparition tradition dating to around 490 established a major pilgrimage site; the earliest written account, the Liber de apparitione Sancti Michaelis, preserves the tradition in a text whose earliest stratum likely dates to the sixth century. Mont Saint-Michel in Normandy became another great center of devotion to Michael, and across medieval Christendom Michael was invoked as protector of the dying, weigher of souls at judgment, and captain of the heavenly armies — roles that extend the scriptural portrait without contradicting it. In England, Michaelmas became one of the four quarter days marking the divisions of the legal and agricultural year, and Michaelmas Term remains a fixture of the English academic calendar.
The September 29 date is attested in the Leonine Sacramentary (sixth century), where it appears as the anniversary of the dedication of a basilica to Michael on the Via Salaria north of Rome. The Gelasian and Gregorian Sacramentaries confirmed September 29 as the proper date, and the feast spread throughout the Western church. In the Anglican tradition, the feast was expanded from Michael alone to include “All Angels,” broadening the commemoration to encompass the entire angelic order — cherubim, seraphim, archangels, and angels — and affirming the Creed’s confession that God is maker of “all things visible and invisible.” This expansion reflects the catholic character of Anglican worship: the feast celebrates not one archangel’s heroism but the whole company of heaven in its unceasing service to God.
Michael appears in Scripture as a warrior angel and protector of God’s people. In Daniel 10:13 and 12:1, he is the “great prince” who stands guard over Israel; in Daniel 10:21, he is called “Michael your prince.” In Revelation 12:7–9, he leads the angelic armies in battle against the dragon and his angels, casting them out of heaven. His name itself — Mi-ka-el, “Who is like God?” — is a declaration of God’s incomparability rather than a personal name in the ordinary sense.
Jude 9 records Michael in contention with the devil over the body of Moses, rebuking Satan with the words “The Lord rebuke you.” Jude’s account draws on traditions preserved in the now-lost conclusion of the Assumption of Moses, a Jewish text also known to Origen and Clement of Alexandria. The canonical epistle’s use of this tradition treats it as theologically reliable — the dispute over Moses’ body illustrates Michael’s authority to rebuke Satan in God’s name — without requiring endorsement of every detail in the extracanonical source. The episode shows Michael acting not on his own authority but as God’s agent, a pattern consistent with his role throughout Scripture.
Angels appear throughout the biblical witness as messengers and servants of God’s purposes. Gabriel announced the births of John the Baptist and Jesus. Angels appeared to shepherds at the Nativity, ministered to Jesus in the wilderness and at Gethsemane, announced the Resurrection, and were present at the Ascension. The seraphim of Isaiah 6 sing the unceasing Trisagion — “Holy, holy, holy is the Lord of hosts” — and the heavenly host of Revelation joins in perpetual worship before the throne. The theology of angels affirms that creation includes different orders of being than merely humanity, that the invisible realm is as real as the visible, and that all creation — visible and invisible — is ordered toward the worship of God.
Everlasting God, you have ordained and constituted in a wonderful order the ministries of angels and mortals: Mercifully grant that, as your holy angels always serve and worship you in heaven, so by your appointment they may help and defend us here on earth; through Jesus Christ our Lord, who lives and reigns with you and the Holy Spirit, one God, for ever and ever. Amen.