Christian theologyChristian theology is the theology of Christian belief and practice. Such study concentrates primarily upon the texts of the Old Testament and of the New Testament, as well as on Christian tradition. Christian theologians use biblical exegesis, rational analysis and argument.
Constantinian shiftConstantinian shift is used by some theologians and historians of antiquity to describe the political and theological changes that took place during the 4th-century under the leadership of Emperor Constantine the Great. Rodney Clapp claims that the shift or change started in the year 200. The term was popularized by the Mennonite theologian John H. Yoder. He claims that the change was not just freedom from persecution but an alliance between the State and the Church that led to a kind of Caesaropapism.
Early ChristianityEarly Christianity, or Paleochristianity, describes the historical era of the Christian religion up to the First Council of Nicaea in 325. Christianity spread from the Levant, across the Roman Empire, and beyond. Originally, this progression was closely connected to already established Jewish centers in the Holy Land and the Jewish diaspora. The first followers of Christianity were Jews who had converted to the faith, i.e. Jewish Christians. Early Christianity contains the Apostolic age and is followed by, and substantially overlaps with, the Patristic era.
First seven ecumenical councilsIn the history of Christianity, the first seven ecumenical councils include the following: the First Council of Nicaea in 325, the First Council of Constantinople in 381, the Council of Ephesus in 431, the Council of Chalcedon in 451, the Second Council of Constantinople in 553, the Third Council of Constantinople from 680–681 and finally, the Second Council of Nicaea in 787. All of the seven councils were convened in modern-day Turkey. These seven events represented an attempt by Church leaders to reach an orthodox consensus, restore peace and develop a unified Christendom.
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.
LabarumThe labarum (λάβαρον) was a vexillum (military standard) that displayed the "Chi-Rho" symbol ☧, a christogram formed from the first two Greek letters of the word "Christ" (ΧΡΙΣΤΟΣ, or Χριστός) – Chi (χ) and Rho (ρ). It was first used by the Roman emperor Constantine the Great. Ancient sources draw an unambiguous distinction between the two terms "labarum" and "Chi-Rho", even though later usage sometimes regards the two as synonyms.
Christianity in the 4th centuryChristianity in the 4th century was dominated in its early stage by Constantine the Great and the First Council of Nicaea of 325, which was the beginning of the period of the First seven Ecumenical Councils (325–787), and in its late stage by the Edict of Thessalonica of 380, which made Nicene Christianity the state church of the Roman Empire. Persecution of Christians in the Roman Empire {| class="wikitable" style="float:right; margin:0 0 0.
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.
PeshittaThe Peshitta (ܦܫܺܝܛܬܳܐ or ܦܫܝܼܛܬܵܐ ) is the standard version of the Bible for churches in the Syriac tradition, including the Maronite Church, the Chaldean Catholic Church, the Syriac Catholic Church, the Syriac Orthodox Church, the Malabar Independent Syrian Church (Thozhiyoor Church), the Syro-Malankara Catholic Church, the Assyrian Church of the East and the Syro-Malabar Church.
Persecution of ChristiansThe persecution of Christians can be historically traced from the first century of the Christian era to the present day. Christian missionaries and converts to Christianity have both been targeted for persecution, sometimes to the point of being martyred for their faith, ever since the emergence of Christianity. Early Christians were persecuted at the hands of both Jews, from whose religion Christianity arose, and the Romans who controlled many of the early centers of Christianity in the Roman Empire.
