when his Holiness Pope John 23, first called for an Ecumenical Council, and at the same time voiced his yearning for Christian unity, the enthusiasm among Catholic and Protestant ecumenicists was immediate.

Deemed a heretic by the Ecumenical First Council of Nicaea of 325, Arius was later exonerated in 335 at the regional First Synod of Tyre, and then, after his death, pronounced a heretic again at the Ecumenical First Council of Constantinople of 381.

In 381, at the Second Ecumenical Council in Constantinople, a group of mainly Eastern bishops assembled and accepted the Nicene Creed of 381, which was supplemented in regard to the Holy Spirit, as well as some other changes: see Comparison between Creed of 325 and Creed of 381.

After the First Ecumenical Council at Nicea, the church structure was patterned after the administrative divisions of the Roman Empire wherein a metropolitan or bishop of a metropolis came to be the ecclesiastical head of a civil capital of a province or a metropolis.

At the Fourth Ecumenical Council at Chalcedon in 451, Constantinople was given jurisdiction over three dioceses for the reason that the city was " the residence of the emperor and senate ".

* The Ecumenical Catholic Communion * The United Methodist Church: Council of Bishops

The Council of Trent () was an Ecumenical Council of the Roman Catholic Church.

It would be over 300 years until the next Ecumenical Council.

Pope John XXIII initially called for a Synod of the Diocese of Rome, an Ecumenical Council, and an updating to the 1917 Code.

After the Second Ecumenical Council of the Vatican ( Vatican II ) closed in 1965, it became apparent that the Code would need to be revised in light of the documents and theology of Vatican II.

That Council of Chalcedon is one of the first seven Ecumenical Councils accepted by Eastern Orthodox, Catholic, and many Protestant Christian churches.

The Council is considered by the Roman Catholics, Eastern Catholic Churches, the Eastern Orthodox Church, the Old Catholics, and various other Western Christian groups to have been the Fourth Ecumenical Council.

The Ecumenical Council of Nicea AD 325 was convened by Constantine under the presidency of Saint Hosius of Cordova and Pope Saint Alexander I of Alexandria to resolve the dispute and eventually led to the formulation of the Symbol of Faith, also known as the Nicene Creed.

In the year AD 381, Pope Timothy I of Alexandria presided over the second ecumenical council known as the Ecumenical Council of Constantinople, to judge Macedonious, who denied the Divinity of the Holy Spirit.

" Nestorius however, still would not repent and so this led to the convening of the First Ecumenical Council of Ephesus ( 431 ), over which Cyril presided.

This title is historically known as “ Patriarch of Alexandria and all Africa on the Holy Apostolic Throne of Saint Mark the Evangelist ,” that is “ of Alexandria and of all Africa .” The title of “ Patriarch ” was first used around the time of the Third Ecumenical Council of Ephesus, convened in AD 431, and ratified at Chalcedon in AD 451.

" These are likely the same Cathari mentioned in Canon 8 of the First Ecumenical Council of Nicaea in 325 AD, which states "... f those called Cathari come over the Catholic faith, let them first make profession that they are willing to communicate full communion with the twice-married, and grant pardon to those who have lapsed ..."

Gregory XII then sent representatives to Constance, whom he granted full powers to summon, open and preside over an Ecumenical Council ; he also empowered them to present his resignation to the Papacy.

* Tanner, Norman P., editor, Decrees of the Ecumenical Councils: Council of Constance 1414 – 18, excerpts of the sessions ( in English )

In the history of Christianity, the First seven Ecumenical Councils, from the First Council of Nicaea ( 325 ) to the Second Council of Nicaea ( 787 ), represent an attempt to reach an orthodox consensus and to unify Christendom under the State church of the Roman Empire.

The Church considers the first seven Ecumenical Councils ( held between the 4th and the 8th century ) to be the most important ; however, there have been more, specifically the Synods of Constantinople, 879 – 880, 1341, 1347, 1351, 1583, 1819, and 1872, the Synod of Iaşi ( Jassy ), 1642, and the Pan-Orthodox Synod of Jerusalem, 1672, all of which helped to define the Orthodox position.

In the Middle Ages, Lamia was called Zetounion ( Ζητούνιον ), a name first encountered in the 8th Ecumenical Council in 869.

The period is generally considered to run from the end of New Testament times or end of the Apostolic Age ( c. AD 100 ) to either AD 451 ( the date of the Council of Chalcedon ), or to the 8th century Second Council of Nicaea, see also First seven Ecumenical Councils.

Arianism is defined as those teachings attributed to Arius which are in opposition to mainstream Trinitarian Christological doctrine, as determined by the first two Ecumenical Councils and currently maintained by the Roman Catholic Church, the Eastern Orthodox Churches, the Oriental Orthodox Churches, and most Reformation Protestant Churches.

* 435 – Deposed Ecumenical Patriarch of Constantinople Nestorius, considered the originator of Nestorianism, is exiled by Roman Emperor Theodosius II to a monastery in Egypt.

When not celebrating Mass but still serving a liturgical function, such as the semiannual Urbi et Orbi papal blessing, some Papal Masses and some events at Ecumenical Councils, cardinal deacons can be recognized by the dalmatics they would don with the simple white mitre ( so called mitra simplex ).

In the early Church, the first canons were decreed by bishops united in " Ecumenical " councils ( the Emperor summoning all of the known world's bishops to attend with at least the acknowledgement of the Bishop of Rome ) or " local " councils ( bishops of a region or territory ).

Ecumenical cooperation and collaboration with other Christian Communions has long been practiced, by the Regions.

All of the original Seven Ecumenical Councils as recognized in whole or in part were called by an emperor of the Eastern Roman Empire and all were held in the Eastern Roman Empire.

#* Quinisext Council, also called Council in Trullo ( 692 ) addressed matters of discipline ( in amendment to the 5th and 6th councils ). The Ecumenical status of this council was repudiated by the western churches.

To be considered Ecumenical Orthodox accept a Council that meets the condition that it was accepted by the whole church.

A case in point is the Third Ecumenical Council where two groups met as duly called for by the emperor, each claiming to be the legitimate council.

George Dragas, and the 1848 Encyclical of the Eastern Patriarchs ( which refers explicitly to the " Eighth Ecumenical Council " and was signed by the patriarchs of Constantinople, Jerusalem, Antioch, and Alexandria as well as the Holy Synods of the first three ), regard other synods beyond the Seventh Ecumenical Council as being ecumenical.

Ecumenical councils are not recognised by nontrinitarian churches such as The Church of Jesus Christ of Latter-day Saints ( and other denominations within Mormonism ), Jehovah's Witnesses, and Unitarians.

* Estonian Apostolic Orthodox Church < nowiki >*</ nowiki > ( autonomy recognized by the Ecumenical Patriarchate but not by the Russian Orthodox Church )

* Ukrainian Orthodox Church < nowiki >*</ nowiki > ( autonomy recognized by the Russian Orthodox Church but not by the Ecumenical Patriarchate )

* Japanese Orthodox Church < nowiki >*</ nowiki > ( autonomy recognized by the Russian Orthodox Church but not by the Ecumenical Patriarchate )

* Chinese Orthodox Church < nowiki >*</ nowiki > ( virtually non-existent, autonomy recognized by the Russian Orthodox Church but not by the Ecumenical Patriarchate )

* The Ecumenical ( Universal ) Judge ( Arbitrator ) of the Holy Apostolic and Catholic ( Universal ) Church.

* All Catholic Church Ecumenical Councils – All the Decrees * Council in the 1911 Encyclopædia Britannica

* Catholic Encyclopedia: The 21 Ecumenical Councils

The Council of 1123 is reckoned in the series of Ecumenical councils by the Catholic Church.

The Roman Catholic Church, however, recognizes the council of 869 as the Eighth Ecumenical Council and doesn't place the later council among Ecumenical Councils.

Worship of the icon as somehow entirely separate from its prototype is expressly forbidden by the Seventh Ecumenical Council ; standard teaching in the Eastern Orthodox and Roman Catholic churches alike conforms to this principle.

The Latin Church of the West, which after 1054 was to become known separately as the Roman Catholic Church, accepted the decrees of the iconodule Seventh Ecumenical Council regarding images.

It was the twenty-first Ecumenical Council of the Catholic Church and the second to be held at St. Peter's Basilica in the Vatican.

The Twenty Ecumenical Councils of the Catholic Church, 1937.

This council is now recognised as Ecumenical by the Catholic Church but rejected by the Eastern Churches.

" " It is the first time, in fact, and saying it fills our souls with profound emotion, that an Ecumenical Council has presented such a vast synthesis of the Catholic doctrine regarding the place which the Blessed Mary occupies in the mystery of Christ and of the Church.

The Third Council of Constantinople, counted as the Sixth Ecumenical Council by the Roman Catholic and Eastern Orthodox churches and other Christian groups, met in 680 / 681 and condemned monoenergism and monothelitism as heretical and defined Jesus Christ as having two energies and two wills ( divine and human ).

i. e. the Roman Catholic, Eastern Orthodox, and traditional Protestant churches ( those that accept at least the first four Ecumenical Councils ); these churches have always considered monophysitism to be heretical.

The Chalcedonian churches -- that is, the Eastern Orthodox and Roman Catholic churches together with those Protestant churches that accept at least the first four Ecumenical Councils -- have always considered monophysitism to be heretical and have generally viewed it as the ( explicit or implicit ) position of the Oriental Orthodox churches.

The Ecumenical Patriarch < span style =" font-size: 87 %">(,</ span > " His Most Divine All-Holiness the Archbishop of Constantinople New Rome and Œcumenical Patriarch ") is the Archbishop of Constantinople – New Rome and ranks as primus inter pares ( first among equals ) in the Eastern Orthodox communion, which is seen by its approximately 300 million followers worldwide as the One, Holy, Catholic, and Apostolic Church.