PentarchyPentarchy (from the Greek Πενταρχία, Pentarchía, from πέντε pénte, "five", and ἄρχειν archein, "to rule") is a model of Church organization formulated in the laws of Emperor Justinian I (527-565) of the Roman Empire. In this model, the Christian Church is governed by the heads (patriarchs) of the five major episcopal sees of the Roman Empire: Rome, Constantinople, Alexandria, Antioch, and Jerusalem.
Christian martyrIn Christianity, a martyr is a person considered to have died because of their testimony for Jesus or faith in Jesus. In years of the early church, stories depict this often occurring through death by sawing, stoning, crucifixion, burning at the stake or other forms of torture and capital punishment. The word martyr comes from the Koine word μάρτυς, mártys, which means "witness" or "testimony". At first, the term applied to the Apostles. Once Christians started to undergo persecution, the term came to be applied to those who suffered hardships for their faith.
Christian pilgrimageChristianity has a strong tradition of s, both to sites relevant to the New Testament narrative (especially in the Holy Land) and to sites associated with later saints or miracles. Christian pilgrimages were first made to sites connected with the birth, life, crucifixion and resurrection of Jesus. Aside from the early example of Origen in the third century, surviving descriptions of Christian pilgrimages to the Holy Land date from the 4th century, when pilgrimage was encouraged by church fathers including Saint Jerome, and established by Saint Helena, the mother of Constantine the Great.
Christianity in the 5th centuryIn the 5th century in Christianity, there were many developments which led to further fracturing of the State church of the Roman Empire. Emperor Theodosius II called two synods in Ephesus, one in 431 and one in 449, that addressed the teachings of Patriarch of Constantinople Nestorius and similar teachings. Nestorius had taught that Christ's divine and human nature were distinct persons, and hence Mary was the mother of Christ but not the mother of God.
Biblical canonA biblical canon is a set of texts (also called "books") which a particular Jewish or Christian religious community regards as part of the Bible. The English word canon comes from the Greek κανών kanōn, meaning "rule" or "measuring stick". The use of the word "canon" to refer to a set of religious scriptures was first used by David Ruhnken, in the 18th century. Various biblical canons have developed through debate and agreement on the part of the religious authorities of their respective faiths and denominations.
CatechesisCatechesis (ˌkætəˈkiːsɪs; from Greek: κατήχησις, "instruction by word of mouth", generally "instruction") is basic Christian religious education of children and adults, often from a catechism book. It started as education of converts to Christianity, but as the religion became institutionalized, catechesis was used for education of members who had been baptized as infants.
Catholic (term)The word catholic (derived via Late Latin catholicus, from the ancient Greek adjective καθολικός () ) comes from the Greek phrase καθόλου () , and is a combination of the Greek words κατά () and ὅλος () . The first known use of "Catholic" was by the church father Saint Ignatius of Antioch in his Letter to the Smyrnaeans (circa 110 AD). In the context of Christian ecclesiology, it has a rich history and several usages. The word in English can mean either "of the Catholic faith" or "relating to the historic doctrine and practice of the Western Church".
Arian controversyThe Arian controversy was a series of Christian disputes about the nature of Christ that began with a dispute between Arius and Athanasius of Alexandria, two Christian theologians from Alexandria, Egypt. The most important of these controversies concerned the relationship between the substance of God the Father and the substance of His Son. Emperor Constantine, through the Council of Nicaea in 325, attempted to unite Christianity and establish a single, imperially approved version of the faith.
