Pentecost commemorates the descent of the Holy Spirit upon the apostles fifty days after Easter (Acts 2:1-41). The name derives from the Greek pentekostos, 'fiftieth,' referring to the Jewish festival of Shavuot (the Feast of Weeks), which falls fifty days after Passover. The typological connection is deliberate and profound: as the Law was given at Sinai fifty days after the Exodus, so the Spirit was given fifty days after the Resurrection, writing the law on human hearts rather than tablets of stone (cf. Jeremiah 31:33, 2 Corinthians 3:3). The Christian observance of Pentecost is among the oldest feasts after Easter itself. Tertullian (De Baptismo 19, c. 200 AD) mentions Pentecost as a season particularly appropriate for baptism, suggesting it was already a significant liturgical occasion by the early third century. The Council of Elvira (c. 305) references the Pentecost season. Eusebius (Vita Constantini 4.64) records that Constantine was baptized at Pentecost. By the fourth century, the feast was universally observed across both East and West. The BCP 2019 lists Pentecost among the seven Principal Feasts — the highest liturgical rank — and the Day of Pentecost is one of the four traditional Ember Day anchors, when prayers are offered for those called to Holy Orders.

Pentecost carries a distinctive liturgical character shaped by its dual identity as both the culmination of Easter and its own feast. The color is red — for the tongues of fire (Acts 2:3) and for the Spirit's presence in the Church. In the medieval West, the custom of releasing doves or dropping rose petals from church ceilings dramatized the Spirit's descent; the French name for Pentecost, Pâques des Roses, recalls this practice. The sequence hymn Veni Sancte Spiritus ('Come, Holy Spirit'), attributed to Stephen Langton (c. 1200), became one of the most beloved Pentecost texts in Western Christianity. In the East, Pentecost is closely linked with the feast of the Holy Trinity, which the Byzantine tradition celebrates on the same day (the West assigns Trinity to the following Sunday). The Kneeling Prayers of Pentecost Vespers in the Byzantine rite mark the formal end of the Paschal season: the congregation kneels for the first time since Easter. The BCP 2019 provides two collects — the first emphasizing the Spirit's revelation of 'the way of eternal life to every race and nation,' the second (from the 1549 BCP) asking for 'a right judgment in all things.' The Old Covenant overlay is significant: Shavuot celebrates both the wheat harvest and the giving of Torah, and the Pentecost narrative in Acts deliberately echoes Sinai imagery — the sound of wind, the appearance of fire, the gathering of nations.

Dunstan was born in 909 near Glastonbury into a family connected to the West Saxon royal house. He was educated at Glastonbury Abbey and showed early talent for music, metalwork, and illumination — arts he practiced throughout his life. It is from this work at the forge that the later medieval tradition draws his most famous image: that while making liturgical vessels he was tempted by the devil and seized him by the nose with red-hot tongs. The episode is unknown to his earliest biographer ('B.,' writing in the 990s) and first appears in Osbern of Canterbury more than a century later; it nevertheless became the iconographic signature by which Dunstan was known throughout the English Middle Ages.

His early career was politically turbulent. He was a courtier under King Æthelstan but was expelled from court on accusations of practicing black magic (likely the suspicion of a jealous rival). After a period of uncertainty, King Edmund appointed him Abbot of Glastonbury around 940. Under Dunstan's leadership, Glastonbury became the model for the English Benedictine revival: he enforced strict observance of the Rule, built up the library, promoted the arts, and trained a generation of monks who would become bishops and reformers.

Dunstan served as chief adviser to successive kings — Edmund, Eadred, and Edgar. Under Edgar (959–975), the monastic reform reached its peak. Dunstan, together with his fellow reformers Æthelwold (Bishop of Winchester) and Oswald (Bishop of Worcester, later Archbishop of York), reorganized English monasticism along Continental Benedictine lines. The Regularis Concordia, a unified monastic customary drawn up at the Council of Winchester (c. 970), codified their reforms.

As Archbishop of Canterbury (959–988), Dunstan wielded enormous ecclesiastical and political power. He crowned Edgar in an elaborate ceremony at Bath in 973 — a liturgical event that established the pattern for English coronations thereafter. After Edgar's death, Dunstan navigated the difficult succession between Edward the Martyr and Æthelred the Unready.

Dunstan died on May 19, 988, in his eightieth year. His last recorded public act was preaching three sermons on Ascension Day, during which he is said to have announced his imminent death.

The most famous legend about Dunstan tells that one night, while he was at work in his forge, the devil appeared at the window in human disguise — in some tellings as a beautiful woman — and sought to draw him into temptation. Dunstan, recognizing his adversary, snatched up the red-hot tongs from the fire and seized the devil by the nose, holding him fast as he howled and writhed; the cries (a later English rhyme adds) were heard three miles off before he was at last released. The story connects to Dunstan's known skill as a metalworker and became his defining iconographic attribute. It first appears, however, in Osbern of Canterbury's Vita (c. 1090), over a century after Dunstan's death; it has no early attestation and belongs to the classic devil-encounter hagiography of the post-Conquest period.

The earliest vita ('B.') records that Dunstan experienced visions and that his appointment to Glastonbury was divinely confirmed, but these are relatively restrained compared to the later tradition. 'B.' also records miracles at Dunstan's tomb, following standard convention.

Dunstan's prediction of his own death on Ascension Day is reported by the earliest sources and has the character of a deathbed prophecy topos, though the specific liturgical context (three sermons on the feast) gives it circumstantial weight.