Maundy Thursday commemorates the events of the night before Christ's crucifixion: the Last Supper, the institution of the Eucharist, the washing of the disciples' feet, and the agony in Gethsemane. The name 'Maundy' derives from the Latin mandatum novum — 'a new commandment' — from John 13:34, spoken after Jesus washed his disciples' feet. The earliest evidence of a distinct liturgical observance on this day comes from the late fourth century. The pilgrim Egeria, writing around 384, describes elaborate Jerusalem services including an afternoon Eucharist at the Martyrium basilica and an evening station at the Imbomon (the traditional site of Jesus's teaching on the Mount of Olives), concluding with a nighttime procession to Gethsemane. By the time of the Apostolic Constitutions (c. 380), the day was established as a fast day. Augustine of Hippo (Ep. 54, to Januarius) attests that by around 400 the day was celebrated with both a morning and evening Eucharist — the evening celebration deliberately recalling the hour of the Last Supper. The foot-washing ceremony (mandatum or pedilavium) became a standard Western liturgical practice by the early medieval period. The seventh-century Ordo Romanus documents the stripping of altars, and the Gelasian Sacramentary provides proper prayers for the day. The Eastern churches developed the day under the name 'Holy and Great Thursday,' with emphasis on both the Last Supper and the Passion beginning at Gethsemane.

The liturgical customs of Maundy Thursday are among the richest in the Christian year. The stripping of the altar after the evening Eucharist — removing cloths, candles, and ornaments to leave the sanctuary bare — dramatically enacts the desolation of Gethsemane and the abandonment of Christ by his disciples. This practice is attested from at least the seventh century (Ordo Romanus) and may be older. The washing of feet, whether performed by the presider on members of the congregation or as a mutual act, recovers the dominical command of John 13 and has been practiced in both East and West, though with varying emphasis — in England, the monarch's participation in the Royal Maundy is documented from the thirteenth century. The reservation of the Blessed Sacrament and the watch before the altar of repose recall Christ's words in Gethsemane: 'Could you not watch with me one hour?' (Matthew 26:40). The Tenebrae office — a service of progressive darkness in which candles are extinguished one by one — is historically associated with the Triduum evenings, and the BCP 2019 provides for it on this night. The evening marks the beginning of the Paschal Triduum — the three-day liturgy spanning Thursday evening through Easter Day that forms the single most important liturgical event of the Christian year. The collect focuses on the institution of the Eucharist specifically, grounding the day's devotion in sacramental theology: what was given on this night continues to be received at every celebration of the Lord's Supper.

Thomas Cranmer studied at Cambridge and was appointed Archbishop of Canterbury in 1533. He oversaw the English Reformation's liturgical dimension, commissioning English-language Scripture and composing the Book of Common Prayer (1549, revised 1552), which replaced the Latin Mass with vernacular worship. The BCP's prose — the Collect for Purity, the General Confession, the marriage vows — remains among the finest in the English language.

Under Edward VI, Cranmer produced the Forty-Two Articles (1553) and advanced Reformed theology. He wrote the Defence of the True and Catholic Doctrine of the Sacrament (1550), articulating a Reformed eucharistic theology. His Homilies provided authorized doctrinal teaching for parish clergy.

When Mary I restored Catholicism, Cranmer was tried for heresy. Under enormous psychological pressure, he signed multiple recantations — genuine submissions reflecting real terror and theological uncertainty. But at his execution on March 21, 1556, he publicly retracted all his recantations, declaring his true Reformed faith. Eyewitnesses reported by Foxe record that he thrust his right hand — which had signed the recantations — into the flames first, crying 'This hand hath offended.' His final words were reportedly 'Lord Jesus, receive my spirit.'

Cranmer's legacy has been interpreted differently across traditions. Protestant tradition emphasizes his final retraction and martyrdom; Catholic accounts stressed his recantations as evidence of uncertain faith. Modern scholarship sees genuine human complexity — real fear, real faith, and a final act of moral courage.