The Christian view of the church was influenced by the Old Testament concept of the qahal, the elected people of God of the end-time, and by the expectation of the coming of the messiah in Judaism. The Greek secular word ekklēsia, the term used for the church, means an assembly of people coming together for a meeting.
In Christianity the concept of the church received a new meaning through its relationship to Jesus Christ as the messianic inaugurator of the kingdom of God: (1) with Christ the elected community of the end-time has appeared; (2) the church is the eschatological gift of the Holy Spirit, which already flows through the life of the church (Acts 2:33); (3) the community of the end-time consists of those who believe in Jesus Christ, as the idea of the elected covenant people (i.e., the Jews) is transferred to the “new Israel”; (4) the church forms the body of its Lord; and (5) the church consists of “living stones,” from which its house is “built” (1 Peter 2:5).
Jesus himself created no firm organization for his community; the expectation of the immediate imminence of the kingdom of God provided no occasion for this. Nevertheless, the selection of the Twelve Apostles and the special position of individual apostles within this circle pointed to the beginnings of a structuralization of his community. After the community was constituted anew because of the impressions made by the appearances of the resurrected Christ, the trend toward structuralization continued.
The unity of the church, which was dispersed geographically, was understood from the viewpoint of the Diaspora (the dispersion of the Jews outside Palestine after the Babylonian Captivity). In the Letter of James, the scattered churches of the new Israel are identified as “the twelve tribes in the Dispersion” (1:1). The Didachē, or the Teaching of the Twelve Apostles (2nd century), viewed the church in terms of the bread of the Eucharist, whose wheat grains “are gathered from the mountains.” The idea of the preexistent divine Logos became the concept of the preexistence of the church, which included the view that the world was created for the sake of the church. The earthly church is thus the representative of the heavenly church. Normative defenses in the early church
Establishment of norms for the church was necessary because diverse interpretations of the Christian message were conceived under the influence of the religions of late antiquity, especially gnosticism—a syncretistic religious dualistic belief system that incorporated Christian motifs. In gnostic interpretations, mixed Christian and pagan ideas appealed to divine inspiration or claimed to be revelations of Christ. The church erected three defenses against the prophetic and visionary efficacy of pneumatic (spiritual) figures as well as against pagan syncretism: (1) the New Testament canon, (2) the apostolic “rules of faith,” or “creeds,” and (3) the apostolic succession of bishops. The common basis of these three defenses is the idea of “apostolicity.”
The early church never forgot that it had created and fixed the canon of the New Testament, primarily in response to the threat of gnostic writings. This is one of the primary distinctions between the Orthodox Church and the Reformation churches, which view the Scriptures as the final norm and rule for the church and church teaching. The Orthodox Church, like the Roman Catholic Church, teaches that the Christian church existed prior to the formation of the canon of Scripture—that it is indeed the source and origin of the Scripture itself. Thus, tradition plays a significant role alongside the Holy Scriptures in the Orthodox and Roman churches.
The apostolic rule of faith—i.e., the creed—issued from the apostolic tradition of the church as a second, shorter form of its solidification, at first oral and then written. It also served as a defense against gnosticism and syncretistic heretical interpretations of the Christian faith.
The third defense that the church used against the gnostics and syncretistic and charismatic movements within the church was the office of bishop, which became legitimized through the concept of apostolic succession. The mandate for missions, the defense against prophecy, the polemics with gnosticism and other alternative versions of Christianity, the persecution of the church, and, not least of all, management of church discipline allowed the monarchical episcopacy to emerge in the early centuries. The bishop, as leader of the eucharistic worship service, as teacher, and as curer of souls, became the chief shepherd of the church and was considered its representative. Evolution of the episcopal office
The evolution of the episcopal office followed a different development in the East and in the West. The Orthodox Church accepts the monarchical episcopacy insofar as it involves the entire church, both the visible earthly and the invisible heavenly churches bound together inseparably. The monarchical principle in the Orthodox Church, however, is based on democratic principles that are grounded in the polity of the early church. Just as all Apostles without exception were of equal authority and none of them held a paramount position over against the others, so too their successors, the bishops, are of equal authority without exception.
Thus, the politics of the Eastern Orthodox churches have a decidedly synodal character. The ecumenical council, an assembly of the bishops of the whole church, constitutes the highest authority of Orthodox synodal polity. The bishops gathered at an ecumenical council resolve all questions of faith as well as of worship and canon law according to the principle of majority rule. Not only the priesthood but also the laity have been able to participate in Orthodox synods. Election to ecclesiastical offices (i.e., pastor, bishop, or patriarch) involves participation by both clergy and laity. The individual polities of modern Orthodox churches (e.g., Greek or Russian) are distinguished according to the amount of state participation in the settlement of ecclesiastical questions.
Orthodoxy was divided into various old and new types of churches. Some of these were “patriarchal,” which meant that they were directly responsible to a patriarch. Others were “autocephalous” (Greek: autokephalos, “self-headed”), which has come to mean in the modern world that as national churches they are in communion with Constantinople but are responsible for authority to their own national synods. This division, and the fact that Orthodoxy has so often been the victim of revolutionary change and political onslaught, have served as a hindrance against any new ecumenical council, even though many Orthodox have asked for one.
In the Roman Catholic Church the papacy evolved out of the monarchical episcopate. The city of Rome occupied a special position in the early church because, as the capital of the Roman Empire, it contained a numerically significant Christian community already in the 1st century. A leading role devolved upon the bishop of Rome in questions of discipline, doctrine, and ecclesiastical and worship order. This occurred in the Latin provinces of the church in the West (Italy, Gaul, Spain, Africa), whose organization followed the provincial organization of the Roman Empire. After the collapse of the Western Roman Empire in the late 5th century, the status of the Roman bishop increased. The theological underpinning of this special position was emphasized by Petrine theology, which saw in the words of Jesus, “You are Peter, and on this rock I will build my church” (Matthew 16:18), a spiritual-legal instituting of the papacy by Jesus Christ himself; in the Greek Church of the East (e.g., Origen) and also for Augustine in the West, however, these words were referred to St. Peter’s confession of faith. Since the time of popes Gelasius I (reigned 492–496), Symmachus (reigned 498–514), and Gregory I (reigned 590–604), these words have served as the foundation for the claim of papal primacy over the entire Christian church.