Together with Baptism the greatest importance has been given to the Eucharist, both of which institutions are singled out in the Gospels as dominical (instituted by Christ) in origin, with a special status and rank. Under a variety of titles (Eucharist from the Greek eucharistia, “thanksgiving”; the Latin mass; the Holy Communion; the Lord’s Supper; and the breaking of the bread) it has been the central act of worship ever since the night of the betrayal of Jesus on the Thursday preceding his crucifixion. It was then that the elements of bread and wine were identified with the body and blood of Jesus in his institution of the Eucharist with his disciples and with the sacrifice he was about to offer in order to establish and seal the new covenant. This “presence” of Jesus has been variously interpreted in actual, figurative, or symbolical senses; but the sacramental sense, as the anamnesis, or memorial before God, of the sacrificial offering on the cross once and for all, has always been accepted.

Along these lines a eucharistic theology gradually took shape in the apostolic and early church without much controversy or formulation. In the New Testament, in addition to the three accounts of the institution of the Eucharist in the first three “books” of the New Testament known as Synoptic Gospels because they have a common viewpoint and common sources (Matt. 26:26ff.; Mark 14:22ff.; Luke 22:17–20), St. Paul’s earliest record of the ordinance in I Cor. 11:17–29, written about ce 55, suggests that some abuses had arisen in conjunction with the common meal, or agapē, with which it was combined. It had become an occasion of drunkenness and gluttony. To rectify this, St. Paul recalled and re-established the original institution and its purpose and interpretation as a sacrificial-sacramental rite. Fellowship meals continued in association with the postapostolic Eucharist, as is shown in the Didachē (a Christian document concerned with worship and church discipline written c. 100–c. 140) and in the doctrinal and liturgical development described in the writings of the Early Church Fathers little was changed. Not until the beginning of the Middle Ages did controversial issues arise that found expression in the definition of the doctrine of transubstantiation at the fourth Lateran Council in 1215. This definition opened the way for the scholastic interpretation of the eucharistic Presence of Christ and of the sacramental principle, in Aristotelian terms. Thus, St. Thomas Aquinas maintained that a complete change occurred in the “substance” of each of the species, while the “accidents,” or outward appearances, remained the same. During the Reformation, though the medieval doctrine was denied in varying ways by the Reformers, it was reaffirmed by the Council of Trent in 1551. Holy Communion was retained as a sacrament by most of the Protestant groups, except that those churches that see the supper solely as a memorial prefer to speak not of a sacrament but of an ordinance. The Society of Friends, the Salvation Army, and some of the Adventist groups have abandoned the practice and concept of a sacrament.

Penance

In its formulation, the Christian doctrine of conciliation, which, as St. Paul contended, required a change of status in the penitent, had to be made sacramentally effective in the individual and in redeemed humanity as a whole. In the Gospel According to Matthew (16:13–20, 18:18) the power to “bind and loose” was conferred on St. Peter and the other Apostles. Lapses into paganism and infidelity in the Roman world by the 3rd century had demanded penitential exercises. These included fasting, wearing sackcloth, lying in ashes and other forms of mortification, almsgiving, and the threat of temporary excommunication. Details of the sins committed were confessed in secret to a priest, who then pronounced absolution and imposed an appropriate penance. In 1215 the sacrament of penance received the authorization of the fourth Lateran Council and was made obligatory at least once a year at Easter on all mature Christians in Western Christendom. When pilgrimages to the Holy Land, to Santiago de Compostela in Spain, or going on a Crusade could be imposed as penitential exercises, commutation by means of payment of money led to abuses and traffic in indulgences and the treasury of merits, a superabundance of merits attributed to Christ and his saints that could be transferred to sinful believers. The abuses opened the way for the Reformation reaction against the penitential system, before they were abolished by the Council of Trent. The power of absolution was retained in the Anglican ordinal and conferred upon priests at their ordination and in the Order of the Visitation of the Sick. The sacrament of penance, however, ceased to be of obligation in the Anglican Communion, though it was commended and practiced by John Whitgift, Richard Hooker, and, after the Restoration in 1660 by the Nonjurors (Anglican clergy who refused to take oaths of allegiance to William III and Mary II in 1689) and revived by the Tractarians (Anglo-Catholic advocates of High Church ideals) after 1833, who encountered some Protestant opposition notwithstanding its entrenchment in canon law and in The Book of Common Prayer.

Ordination

Most Christian theologians have claimed that the ministry of bishops, priests, and deacons derives its authority and sacramental efficacy from Christ through his Apostles. In the Roman Catholic Church it has been maintained that a special charismatic sacramental endowment conveying an indelible “character” has been conferred on those who receive valid ordination by the laying on of hands on their heads by bishops (who thus transfer to them the “power of orders”), prayer, and a right intention. In Protestant churches the ministry is interpreted as a function rather than as a status. Just as the sacramental power to ordain, confirm, absolve, bless, and consecrate the Eucharist can be given, so also it can be taken away or suspended for sufficient reason.