Non-Chalcedonian in the context of "Patriarch of Antioch"

The Greek Orthodox Patriarchate of Alexandria and all Africa (Ancient Greek: Πατριαρχεῖον Ἀλεξανδρείας καὶ πάσης Ἀφρικῆς, romanized: Patriarkheîon Alexandreías ke pásīs Afrikês, lit. 'The Patriarchate of Alexandria and all Africa'), also known as the Greek Orthodox Church of Alexandria, is an autocephalous patriarchate that is part of the Eastern Orthodox Church. Its seat is in Alexandria, and it has canonical responsibility for the entire African continent.

It is commonly called the Greek or Eastern Orthodox Patriarchate of Alexandria to distinguish it from the Coptic Orthodox Patriarchate of Alexandria. Members of the Greek Orthodox Patriarchate were once referred to as "Melkites" by non-Chalcedonian Christians because they remained in communion with the Ecumenical Patriarchate of Constantinople after the schism that followed the Council of Chalcedon in 451. Mark the Evangelist is considered the founder of the See, and the Patriarchate's emblem is the Lion of Saint Mark.

The Chalcedonian schism, also known as the Monophysite schism, is the break of communion between the Oriental Orthodox Churches and the Great Church (which later became the Eastern Orthodox Church and Catholic Church) in the aftermath of the Council of Chalcedon. Although the bishops at Chalcedon greatly respected Cyril of Alexandria and used his writings as a benchmark for orthodoxy, opponents of the council believed that the Chalcedonian Definition, which states that Christ is "acknowledged in Two Natures", was too close to Nestorianism and contradicts Cyril's formula "one nature of God the Word incarnate". The Council had also deposed the Pope of Alexandria, Dioscorus, but his supporters continued to consider him their rightful Pope, refusing to recognise the council-appointed Proterius.

The anti-Chalcedonian strongholds were in Egypt, Palestine and later Syria. Over the next century, their communities gradually separated from the official church of the Byzantine Empire, eventually becoming the Oriental Orthodox Churches. The imperial government made many attempts to mend the schism, generally by trying to compromise between the two positions, but these attempts only created further heresies and schisms. The Arab conquests of the Levant and of Egypt in the 7th century fossilised the schism, but ecumenical dialogue between Chalcedonian and non-Chalcedonian Christians has been renewed since the 20th century.

The Patriarch of Antioch is a traditional title held by the bishop of Antioch (modern-day Antakya, Turkey). As the traditional "overseer" (ἐπίσκοπος, episkopos, from which the word bishop is derived) of the first gentile Christian community, the position has been of prime importance in Pauline Christianity from its earliest period. This diocese is one of the few for which the names of its bishops from the apostolic beginnings have been preserved. Today five churches use the title of patriarch of Antioch: one Eastern Orthodox (the Greek Orthodox Church of Antioch); one Oriental Orthodox (the Syriac Orthodox Church); and three Eastern Catholic (the Maronite, Syriac Catholic, and Melkite Greek Catholic Churches).

According to the pre-congregation church tradition, this ancient patriarchate was founded by the Apostle Saint Peter. The patriarchal succession was disputed at the time of the Meletian schism in 362 and again after the Council of Chalcedon in 451, when there were rival Melkite and non-Chalcedonian claimants to the see. Following a 7th-century succession dispute in the Melkite Church, the Maronites also began appointing a Maronite patriarch. After the First Crusade, the Catholic Church began appointing a Latin Church patriarch of Antioch, though this became strictly titular after the Fall of Antioch in 1268, and was abolished completely in 1964. In the 18th century, succession disputes in the Greek Orthodox and Syriac Orthodox Churches of Antioch led to factions of those churches entering into communion with Rome under claimants to the patriarchate: respectively the Melkite Greek Catholic patriarch of Antioch and the Syriac Catholic patriarch of Antioch. Their respective Orthodox progenitors are the Greek Orthodox patriarch of Antioch and the Syriac Orthodox patriarch of Antioch.

Monothelitism, or monotheletism, is a theological doctrine in Christianity that was proposed in the 7th century, but was ultimately rejected by the sixth ecumenical council. It held Christ as having only one will and was thus contrary to dyothelitism, the Christological doctrine accepted by most Christian denominations, which holds Christ as having two wills (divine and human). Historically, monothelitism was closely related to monoenergism, a theological doctrine that holds Jesus Christ as having only one energy. Both doctrines were at the center of Christological disputes during the 7th century.

Monothelitism is from Greek: μονοθελητισμός, romanized: monothelētismós, lit. 'doctrine of one will'. Theological notions related to the oneness of Christ's will emerged as a result of some earlier Christological controversies that were related to monophysitism as formulated by Eutyches (d. 456) and miaphysitism as formulated by non-Chalcedonian followers of Cyril of Alexandria (d. 444). Since the notion of Christ's one nature implied the oneness of his will, ecclesiastical and political elites of the Eastern Roman Empire tried during the 7th century to promote monothelitism as a unifying doctrine that would reconcile divided Christian factions. In spite of strong imperial support, those attempts failed, and monothelitism was consequently rejected and denounced as heresy in 680–681 at the Third Council of Constantinople, the sixth ecumenical council.

The Syriac Orthodox patriarch of Antioch and All the East is the head of the Syriac Orthodox Church. According to tradition, the patriarchate of Antioch was established by Saint Peter in the 1st century AD, but split into two separate lines of patriarchs after the deposition of Patriarch Severus of Antioch in 518 over the issue of the Council of Chalcedon of 451. The non-Chalcedonian supporters of Severus went on to form what is now known as the Syriac Orthodox Church, whilst the Chalcedonians developed the church now known as the Greek Orthodox Church of Antioch.

The Syriac Orthodox Church underwent schism in the medieval era, first, after the death of Patriarch Philoxenus I Nemrud in 1292 with the formation of separate patriarchates of Mardin and Melitene, and again in 1364 due to the emergence of a patriarchate of Tur Abdin. Unity was restored to the church gradually as the patriarchate at Melitene came to an end in c. 1360, and the patriarchate of Mardin lapsed after its patriarch Ignatius Behnam Hadloyo was acknowledged as patriarch of Antioch in 1445. A line of patriarchs in communion with the Catholic Church split permanently in 1782, and thus formed the Syriac Catholic Church.