Second Council of Constantinople in the context of "Calvinism"

In the history of Christianity, the first seven ecumenical councils are as follows: 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 to 681 and finally, the Second Council of Nicaea in 787.

These seven events represented an attempt by Church leaders to reach an orthodox consensus, restore peace and develop a unified Christendom. Among Eastern Christians the Eastern Orthodox, Oriental Orthodox, and Church of the East (Assyrian) churches and among Western Christians the Roman Catholic, Anglican, Utrecht and Polish National Old Catholic, and some Scandinavian Lutheran churches all trace the legitimacy of their clergy by apostolic succession back to this period and beyond, to the earlier period referred to as the Early Church.

The Quinisext Council (Latin: Concilium Quinisextum; Koine Greek: Πενθέκτη Σύνοδος, romanized: Penthékti Sýnodos, literally meaning, Fifth-Sixth Meeting), i.e., the Fifth-Sixth Council, often called the Council in Trullo, Trullan Council, or the Penthekte Synod, was a church council held in 692 at Constantinople under Justinian II.

The synod is known as the "Council in Trullo" because, like the Sixth Ecumenical Council, it was held in a domed hall in the Imperial Palace (τρούλος [troúlos], meaning a cup or dome). Both the Fifth and the Sixth Ecumenical Councils had omitted to draw up disciplinary canons, and as this council was intended to complete both in this respect, it took the name of Quinisext.

The perpetual virginity of Mary is a Christian doctrine that Mary, the mother of Jesus, was a virgin "before, during and after" the birth of Christ. In Western Christianity, the Catholic Church adheres to the doctrine, as do many Lutherans, some Anglicans, Reformed, and other Protestants. In Eastern Christianity, the Oriental Orthodox Churches and the Church of the East both adhere to this doctrine as part of their ongoing tradition, and Eastern Orthodox churches recognize Mary as Aeiparthenos, meaning "ever-virgin". It is one of the four Marian dogmas of the Catholic Church. Most modern nonconformist Protestants, such as the Plymouth Brethren, reject the doctrine.

The extant written tradition of the perpetual virginity of Mary first appears in a late 2nd-century text called the Protoevangelium of James. The Second Council of Constantinople in 553 gave her the title "Aeiparthenos", meaning Perpetual Virgin, and at the Lateran Synod of 649 Pope Martin I emphasized the threefold character of the perpetual virginity, before, during, and after the birth of Christ. The Lutheran Smalcald Articles (1537) and the Reformed Second Helvetic Confession (1562) codified the doctrine of perpetual virginity of Mary as well.

Didymus the Blind (Coptic: Ⲇⲓⲇⲩⲙⲟⲥ Ⲡⲓⲃⲉⲗⲗⲉ; c. 313 – 398) was a Christian theologian in the Church of Alexandria, where he taught for about half a century. He was a student of Origen, and, after the Second Council of Constantinople condemned Origen, Didymus's works were not copied. Many of his writings are lost, but some of his commentaries and essays survive. He was seen as intelligent and a good teacher.

Various early Christian writers wrote gospels and other books, some of which were canonized as the New Testament canon developed. The Apostolic Fathers were prominent writers who are traditionally understood to have met and learned from Jesus's personal disciples. The Church Fathers are later writers with no direct connection to the disciples (other than the claim to apostolic succession). Early Christian apologists tried to defend Christianity against its critics, especially the Ancient Greek and Roman philosophers. Dates given, if not otherwise specified, are of their writings or bishopric, not of their lives.

• Paul of Tarsus, "Apostle to the Gentiles", earliest New Testament author 45~65
• Four Evangelists, traditionally identified as the authors of the canonical gospels 60~125
• Ignatius, bishop of Antioch, apostolic father 68~107
• Marcion of Sinope, evangelist and theologian, founder of Marcionism, published the first known canon of the New Testament, 85~160
• Clement of Rome, bishop of Rome, apostolic father 88~101
• Papias, bishop of Hierapolis, apostolic father 110~130
• Polycarp of Smyrna, bishop of Smyrna, apostolic father 110~160
• Aristides of Athens, apologist ~120
• Justin Martyr, church father ~165
• Melito of Sardis, bishop of Sardis, ~180
• Irenaeus, bishop of Lyon, disciple of Polycarp, apologist 180~202
• Origen of Alexandria, 185~254, Neoplatonist, controversial during his lifetime, posthumously condemned at the Second Council of Constantinople in 553
• Tatian, pupil of Justin Martyr, ascetic theologian ~185
• Athenagoras of Athens, philosopher, apologist ~190
• Polycrates, bishop of Ephesus, excommunicated by Victor I of Rome over the Easter controversy ~196
• Montanus, self-proclaimed prophet and founder of Montanism, last quarter of 2nd century CE
• Tertullian, church father, apologist, first Christian writer in Latin, later a Montanist 197~230
• Hippolytus, church father, sometimes termed the first Antipope, reconciled with the church and died a martyr 217~236
• Cyprian, bishop of Carthage, martyr 218~258
• Clement of Alexandria, church father, Bishop of Alexandria ~220
• Novatian, a rigorist and Antipope in 251
• Dionysius, patriarch of Alexandria, pope of the Coptic Orthodox Church 248~264
• Paul of Samosata, bishop of Antioch, adoptionist, condemned at 269 Council of Antioch
• Athanasius of Alexandria, c. 297~373, patriarch of Alexandria, defender of the Trinitarian doctrine
• Donatus Magnus, bishop of Carthage, (+355), leader of the Donatists from 313
• Lactantius, apologist ~317
• Arnobius, apologist ~330
• Eusebius, wrote History of the Church ~325
• Augustine of Hippo, 354-430, Latin church father, wrote Confessions and City of God

Theodoret of Cyrus or Cyrrhus (Ancient Greek: Θεοδώρητος Κύρρου; c. 393 – c. 458) was a notable theologian of the School of Antioch, biblical commentator, and bishop of Cyrrhus (423–457). He participated in several 5th-century Christological controversies within the Eastern Roman Church that resulted in various ecumenical acts and schisms. Theodoret wrote against Cyril of Alexandria's Twelve Anathemas, which were sent to Nestorius, and did not condemn Nestorius until the Council of Chalcedon. Selected writings by Theodoret directed against Cyril formed part of the subject matter of the Three Chapters Controversy and were condemned posthumously at the Second Council of Constantinople (533). He is accorded the epithet "Blessed" in the Eastern Orthodox Church.

Subordinationism is a Trinitarian doctrine wherein the Son (and sometimes also the Holy Spirit) is subordinate to the Father, not only in submission and role, but with actual ontological subordination to varying degrees. It posits a hierarchical ranking of the persons of the Social Trinity, implying ontological subordination of the persons of the Son and the Holy Spirit. It was condemned as heretical in the Second Council of Constantinople.

It is not to be confused with Arianism, as Subordinationism has been generally viewed as closer to the Nicene-Constantinopolitan view. While Arianism was developed out of it, it did not confess the personhood of the Holy Spirit and of the Son, both eternal.