Full communion is a communion or relationship of full agreement among different Christian denominations or Christian individuals that share certain essential principles of Christian theology. Views vary among denominations on exactly what constitutes full communion, but typically when two or more denominations are in full communion it enables services and celebrations, such as the Eucharist, to be shared among congregants or clergy of any of them with the full approval of each.
Definition and terminology
Full communion is an ecclesiological term for an established relationship between Christian denominations that may be constituted by shared eucharist, doctrine, and ecclesiology. Different denominations emphasize different aspects or define the term differently.
Several Protestant denominations base their idea of full communion on the Augsburg Confession which says that "the true unity of the church" is present where "the gospel is rightly preached and sacraments rightly administered." They believe that full communion between two denominations is not a merger, but rather is when two denominations develop a relationship based on a mutual understanding, respect and recognition of Baptism and sharing of the Lord's Supper. They may worship together, exchange clergy, and share commitments to evangelism and service. For example, groups recognized as being in full communion with the Evangelical Lutheran Church, on this basis, include the Presbyterian Church (USA), Reformed Church in America, United Church of Christ, the Episcopal Church (United States), the Moravian Church, and the United Methodist Church. These churches are not necessarily in full communion with each other, however; each denomination is free to develop its own relationships with other churches. For example, The Episcopal Church, in addition to being a member of the Anglican Communion, is in full communion with the Evangelical Lutheran Church in America, Moravian Church (Northern and Southern Provinces), Mar Thoma Syrian Church of India, Old Catholic Churches of the Union of Utrecht, Philippine Independent Church, and the Church of Sweden. They are not, currently, in full communion with the Presbyterian Church (USA), Reformed Church in America, or the United Church of Christ, though they are currently in dialogue with other churches; including the United Methodist Church, Presbyterian Church (USA), and Roman Catholic Church.
By Christian denomination
Lutheran Churches
Reformed Churches
The United Church of Christ (UCC) defines full communion as meaning that "divided churches recognize each others' sacraments and provide for the orderly transfer of ministers from one denomination to another." Some of these go back to the 17th century Pilgrims in Holland; other relationships are recent. The UCC is in full communion alliance with the members of the World Communion of Reformed Churches, the Union of Evangelical Churches in Germany, the Presbyterian Church in the US, and several others in North America and elsewhere.
Anglican Communion
The Anglican Communion distinguishes between full communion and intercommunion. It applies the first term to situations "where between two Churches, not of the same denominational or confessional family, there is unrestricted communio in sacris including mutual recognition and acceptance of ministries", and the second term to situations "where varying degrees of relation other than full communion are established by agreement between two such Churches". This distinction differs from the distinction that the Catholic Church makes between full and partial communion in that the Anglican concept of intercommunion implies a formal agreement entered into by the churches concerned. As with other Protestant traditions, the Anglican understanding of full communion differs from that of the Roman Catholic Church and Eastern Orthodoxy, which consider that full communion between churches involves them becoming a single church, as in the case of the particular churches "in which and formed out of which the one and unique Catholic Church exists".
In addition the Anglican Communion recognizes the possibility of full communion between some of its member provinces or churches and other churches, without having the entire Anglican Communion share that relationship. An example is the Porvoo Communion, which is largely composed of Evangelical Lutheran Churches.