Communion (Christianity)

Meanings and primary forms

Communion is commonly discussed in two overlapping senses:

• Ecclesial or spiritual communion: the relational bond that unites Christians to Christ and to one another through faith, prayer, and shared life.
• Liturgical communion (the Eucharist): the rite in which bread and wine are consecrated and shared as the body and blood of Christ, celebrated under various names such as the Lord's Supper or Holy Communion.

Parts and practice

The ritual form of Communion typically involves consecration of bread and wine (or substitutes), distribution to communicants, and prayers of thanksgiving. Churches differ markedly on frequency and preparation: some celebrate weekly, others less often; some require prior confession or baptism; others invite all baptized or even all present. The practice expresses thanksgiving, remembrance, and the believer's incorporation into the body of Christ.

Theological distinctions

Theology about what occurs in Communion varies among traditions. Roman Catholic doctrine uses the term transubstantiation to describe the change of the elements into Christ's body and blood. Eastern Orthodoxy likewise affirms a real presence while emphasizing mystery. Many Protestant churches speak of a spiritual presence, a sacramental union, or a symbolic memorial. These differences have shaped ecclesial identities and sacramental discipline.

History and development

The Eucharist has its roots in Jesus' Last Supper narratives and early Christian meal customs. Over centuries the rite developed liturgically and theologically, adapting to cultural and doctrinal contexts. Debates about presence, worthiness, and who may receive Communion played central roles in schisms and in later ecumenical conversations aimed at reconciling differing practices.

Importance and ecumenical issues

Communion is central to Christian life as a sign of unity, forgiveness, and identity. It functions pastorally—to heal, welcome, and form communities—and the question of intercommunion remains a prominent ecumenical topic: agreements about 'full communion' or reciprocal reception require theological and pastoral convergence. For many believers, participation in Communion is the primary expression of belonging to Christ's church.