The word catholic comes from the Greek phrase καθόλου katholou 'on the whole, according to the whole, in general', and is a combination of the Greek words κατά 'about' and ὅλος 'whole'. The first known use of "Catholic" was by the church father Saint Ignatius of Antioch in his Letter to the Smyrnaeans. In the context of Christian ecclesiology, it has a rich history and several usages.
Polycarp was a Christian bishop of Smyrna. According to the Martyrdom of Polycarp, he died a martyr, bound and burned at the stake, then stabbed when the fire failed to consume his body. Polycarp is regarded as a saint and Church Father in the Catholic, Eastern Orthodox, Oriental Orthodox, Anglican, and Lutheran churches.
Cyprian was a bishop of Carthage and an early Christian writer of Berber descent, many of whose Latin works are extant. He is recognized as a saint in the Western and Eastern churches.
Christian Church is an ecclesiological term referring to what different Christian denominations conceive of as being the true body of Christians or the original institution established by Jesus. "Christian Church" has also been used in academia as a synonym for Christianity, despite the fact that it is composed of multiple churches or denominations, many of which hold a doctrinal claim of being the "one true church", to the exclusion of the others.
The East–West Schism is the break of communion since 1054 between the Roman Catholic and Eastern Orthodox churches. Immediately following the beginning of the schism, it is estimated that Eastern Christianity comprised a slim majority of Christians worldwide, with the majority of remaining Christians being Western. The schism was the culmination of theological and political differences which had developed during the preceding centuries between Eastern and Western Christianity.
The Apostolic Fathers, also known as the Ante-Nicene Fathers, were core Christian theologians among the Church Fathers who lived in the 1st and 2nd centuries AD, who are believed to have personally known some of the Twelve Apostles, or to have been significantly influenced by them. Their writings, though widely circulated in Early Christianity, were not included in the canon of the New Testament. Many of the writings derive from the same time period and geographical location as other works of early Christian literature which came to be part of the New Testament. Some of the writings found among the Apostolic Fathers appear to have been as highly regarded as some of the writings which became the New Testament.
In Christian theology, ecclesiology is the study of the Church, the origins of Christianity, its relationship to Jesus, its role in salvation, its polity, its discipline, its eschatology, and its leadership.
Papal primacy, also known as the primacy of the bishop of Rome, is a Roman Catholic ecclesiological doctrine concerning the respect and authority that is due to the pope from other bishops and their episcopal sees. The doctrine is accepted at a fundamental level by both the Catholic Church and Eastern Orthodox Church, though the two disagree on the nature of primacy.
John Zizioulas is a Greek Orthodox prelate and the current titular Metropolitan bishop of Pergamon of the Ecumenical Patriarchate of Constantinople. He is one of the most influential Orthodox Christian theologians today.
The rule of faith is the name given to the ultimate authority or standard in religious belief. It was used by Early Christian writers such as Tertullian. The phrase is sometimes used for early creeds.
The doctrine of the Trinity, considered the core of Christian theology by Trinitarians, is the result of continuous exploration by the church of the biblical data, thrashed out in debate and treatises, eventually formulated at the First Council of Nicaea in AD 325 in a way they believe is consistent with the biblical witness, and further refined in later councils and writings. The most widely recognized Biblical foundations for the doctrine's formulation are in the Gospel of John.
Against Heresies, sometimes referred to by its Latin title Adversus Haereses, is a work of Christian theology written in Greek about the year 180 by Irenaeus, the bishop of Lugdunum.
The church invisible, invisible church, mystical church or church mystical, is a theological concept of an "invisible" Christian Church of the elect who are known only to God, in contrast to the "visible church"—that is, the institutional body on earth which preaches the gospel and administers the sacraments. Every member of the invisible church is "saved", while the visible church contains all individuals who are saved though also having some who are "unsaved". According to this view, Bible passages such as Matthew 7:21–27, Matthew 13:24–30, and Matthew 24:29–51 speak about this distinction.
Christianity in the ante-Nicene period was the time in Christian history up to the First Council of Nicaea. This article covers the period following the Apostolic Age of the first century, c. 100 AD, to Nicaea in 325 AD.
The term Protestant ecclesiology refers to the spectrum of teachings held by the Protestant Reformers concerning the nature and mystery of the invisible church that is known in Protestantism as the Christian Church.
The Church Fathers, Early Church Fathers, Christian Fathers, or Fathers of the Church were ancient and influential Christian theologians and writers who established the intellectual and doctrinal foundations of Christianity. The historical period in which they worked became known as the Patristic Era and spans approximately from the late 1st to mid-8th centuries, flourishing in particular during the 4th and 5th centuries, when Christianity was in the process of establishing itself as the state church of the Roman Empire.
The term "Great Church" is used in the historiography of early Christianity to mean the period of about 180 to 313, between that of primitive Christianity and that of the legalization of the Christian religion in the Roman Empire, corresponding closely to what is called the Ante-Nicene Period. "It has rightly been called the period of the Great Church, in view of its numerical growth, its constitutional development and its intense theological activity."
In Reformed theology, baptism is a sacrament signifying the baptized person's union with Christ, or becoming part of Christ and being treated as if they had done everything Christ had. Sacraments, along with preaching of God's word, are means of grace through which God offers Christ to people. Sacraments are believed to have their effect through the Holy Spirit, but these effects are only believed to be beneficial to those who have faith in Christ.
The Popular Patristics Series is a series of volumes of original English translations of mainly first millennium Christian texts published by St. Vladimir's Seminary Press. The aim of the series is "to provide readable and accurate translations of a broad range of early Christian literature to a wide audience—from students of Christian history and theology to lay Christians reading for spiritual benefit." It currently comprises 61 volumes. The texts are principally translated from Greek, but some Latin, Syriac and Coptic writers are included. Each volume is translated by a recognized patristic scholar and also contains a concise but comprehensive introduction to the patristic author and their works. John Behr was the longtime series editor until 2020, when he handed off the role to Bogdan Bucur and assistant editor Ignatius Green.
Catholic ecclesiology is the theological study of the Catholic Church, its nature and organization, as described in revelation or in philosophy. Such study shows a progressive development over time. Here the focus is on the time leading into and since the Second Vatican Council (1962–1965).
!["[...] one holy Church is to continue forever. The Church is the congregation of saints, in which the Gospel is rightly taught and the Sacraments are rightly administered." - Augsburg Confession AugsburgConfessionArticle7OftheChurch.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b7/AugsburgConfessionArticle7OftheChurch.jpg/220px-AugsburgConfessionArticle7OftheChurch.jpg)
