Ecclesiology (from Greek ἐκκλησίᾱ, ekklēsiā, "congregation, church"; and -λογία, -logia) is the study of the theological understanding of the Christian church. Specific areas of concern include the church's role in salvation, its origin, its relationship to the historical Christ, its discipline, its destiny, and its leadership. Ecclesiology is, therefore, the study of the church as a thing in, and of, itself.

Different ecclesiologies give shape to very different institutions. Thus, in addition to describing a broad discipline of theology, ecclesiology may be used in the specific sense of a particular church or denomination’s character, self-described or otherwise. This is the sense of the word in such phrases as Roman Catholic ecclesiology, Lutheran ecclesiology, and ecumenical ecclesiology.

Etymology

Ecclesiology comes from the Greek ἐκκλησία (ekklesia), which entered Latin as ecclesia. In the Greco-Roman world, the word was used to refer to a lawful assembly, or a called legislative body. As early as Pythagoras, the word took on the additional meaning of a community with shared beliefs.¹ This is the meaning taken in the Greek translation of the Hebrew Scriptures (the Septuagint), and later adopted by the Christian community to refer to the assembly of believers.²

Issues addressed by ecclesiology

Ecclesiology asks the questions:

• Who is the Church? Is it a visible or earthly corporation or a unified, visible society -- a "church" in the sense of a specific denomination or institution, for instance? Or is it the body of all believing Christians (see invisible church) regardless of their denominational differences and disunity? What is the relationship between living Christians and departed Christians (the "cloud of witnesses") -- do they (those on Earth and those in Heaven) constitute together the Church?

• Must one join a church? That is, what is the role of corporate worship in the spiritual lives of believers? Is it in fact necessary? Can salvation be found outside of formal membership in a given faith community, and what constitutes "membership?" (Baptism? Formal acceptance of a creed? Regular participation?)

• What is the authority of the Church? Who gets to interpret the doctrines of the Church? Is the organizational structure itself, either in a single corporate body, or generally within the range of formal church structures, an independent vehicle of revelation or of God's grace? Or is the Church's authority instead dependent on and derivative of a separate and prior divine revelation external to the organization, with individual institutions being "the Church" only to the extent that they teach this message? For example, is the Bible a written part of a wider revelation entrusted to the Church as faith community, and therefore to be interpreted within that context? Or is the Bible the revelation itself, and the Church is to be defined as a group of people who claim adherence to it?

• What does the Church do? What are the sacraments, divine ordinances, and liturgies, in the context of the Church, and are they part of the Church's mission to preach the Gospel? What is the comparative emphasis and relationship between worship service, spiritual formation, and mission, and is the Church's role to create disciples of Christ or some other function? Is the Eucharist the defining element of the rest of the sacramental system and the Church itself, or is it secondary to the act of preaching? Is the Church to be understood as the vehicle for salvation, or the salvific presence in the world, or as a community of those already "saved?"

• How should the Church be governed? What was the mission and authority of the Apostles, and is this handed down through the sacraments today? What are the proper methods of choosing clergy such as bishops and priests, and what is their role within the context of the Church? Is an ordained clergy necessary? * Who are the leaders of a church? Must there be a policy-making board of "leaders" within a church and what are the qualifications for this position, and by what process do these members become official, ordained "leaders"? Must leaders and clergy be "ordained," and is this possible only by those who have been ordained by others?

• What are the roles of 'spiritual gifts' in the life of the church?

• How does the Church's New Covenant relate to the covenants expressed in scripture with God's chosen people, the Jewish people?

• What is the ultimate destiny of the Church in Christian eschatology?

Roman Catholic ecclesiology

Roman Catholic ecclesiology holds that the Catholic Church alone is the "one, holy, catholic and apostolic Church", and is the only Church of divine and apostolic origin. In this view, the Catholic Church— comprised of all baptized, professing Catholics, both clergy and laity— is the unified, visible society founded by Christ himself, and its hierarchy derives its spiritual authority through the centuries, via apostolic succession of its bishops, most especially through the bishop of Rome (the Pope) whose successorship comes from St. Peter the Apostle, whom Christ gave "the keys to the Kingdom of Heaven". Thus, the Popes, in the Catholic view, have a God-ordained universal jurisdiction over the whole Church on earth. The Catholic Church is considered Christ's mystical body, and the universal sacrament of salvation, whereby Christ enables men to receive sanctifying grace. Although the Catholic Church maintains that it is the sole Church of Christ, it states that other Christian communities, such as the Protestant denominations and the Eastern Orthodox, may contain "some elements of sanctification and truth", inasmuch as they share some beliefs with the Catholic Church.

Eastern Orthodox ecclesiology

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Protestant ecclesiology

Magisterial Reformation ecclesiology

Martin Luther argued that because the Catholic Church had "lost sight of the doctrine of grace", it had "lost its claim to be considered as the authenthic Christian church." ; this argument was open to the counter-criticism from Catholics that he was thus guilty of schism and a Donatist position, and in both cases therefore opposing central teachings of the early Church and most especially the Church father St. Augustine of Hippo.³

Radical Reformation ecclesiology

Radical Reformation ecclesiology holds that "the true church [is] in heaven, and no institution of any kind on earth merit[s] the name 'church of God.'"⁴

See also

Beliefs that define the church

• Body of Christ
• Biblical canon
• Creed
• Orthodoxy
• Priesthood of all believers
• Theology: beliefs about the nature of God. This can include Pneumatology (beliefs about the Holy Spirit), Christology (beliefs about Jesus being the Messiah), and Soteriology (beliefs about how people are saved).
• sobor
• sobornost

Rituals that define the church

• Liturgy
  • Ritualism
• Sermon
• Sacrament
  • Eucharist
  • Baptism
    • Infant baptism
    • Believer's baptism
    • Confirmation
  • Chrismation
  • Holy Orders

Topics in church government

References

External links

• Centre for the Study of Contemporary Ecclesiology at Liverpool Hope University
• A primer (PDF) on Eastern Orthodox and Roman Catholic ecclesiology from an Orthodox perspective

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