The Synod of Jassy or Synod of Iași (also referred to as the Council of Jassy or the Council of Iași), was convened in

Iași Iași ( , , ; also known by other #Etymology and names, alternative names), also referred to mostly historically as Jassy ( , ), is the Cities in Romania, third largest city in Romania and the seat of Iași County. Located in the historical ...

Moldavia Moldavia (, or ; in Romanian Cyrillic alphabet, Romanian Cyrillic: or ) is a historical region and former principality in Eastern Europe, corresponding to the territory between the Eastern Carpathians and the Dniester River. An initially in ...

(present-day

Romania Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to ...

) between 15 September and 27 October 1642 by the

Ecumenical Patriarch The ecumenical patriarch of Constantinople () is the archbishop of Constantinople and (first among equals) among the heads of the several autocephalous churches that comprise the Eastern Orthodox Church. The ecumenical patriarch is regarded as ...

Parthenius I of Constantinople, with the support of the Moldavian Prince

Vasile Lupu Lupu Coci, known as Vasile Lupu (; 1595 – 1661), was the voivode of Moldavia between 1634 and 1653. He was of Albanian and Greek origin. Lupu had secured the Moldavian throne in 1634 after a series of complicated intrigues and managed to h ...

. The purpose of the

synod A synod () is a council of a Christian denomination, usually convened to decide an issue of doctrine, administration or application. The word '' synod'' comes from the Ancient Greek () ; the term is analogous with the Latin word . Originally, ...

was to counter what Eastern Orthodox considered as

Roman Catholic The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...

and

Protestant Protestantism is a branch of Christianity that emphasizes Justification (theology), justification of sinners Sola fide, through faith alone, the teaching that Salvation in Christianity, salvation comes by unmerited Grace in Christianity, divin ...

doctrinal errors that had entered

Eastern Orthodox Christian theology Eastern Orthodox theology is the theology particular to the Eastern Orthodox Church. It is characterized by monotheistic Trinitarianism, belief in the Incarnation of the divine Logos or only-begotten Son of God, cataphatic theology with apoph ...

, and to offer a comprehensive Eastern Orthodox statement on the content and character of the Eastern Orthodox faith. Including representatives of the Greek and Slavic Churches, it condemned the

Calvinist Reformed Christianity, also called Calvinism, is a major branch of Protestantism that began during the 16th-century Protestant Reformation. In the modern day, it is largely represented by the Continental Reformed Protestantism, Continenta ...

teachings ascribed to

Cyril Lucaris Cyril I of Constantinople (''Cyril Lucaris'' or ''Kyrillos Loukaris'' (; 13 November 1572 – 27 June 1638) was a Greek prelate and theologian, and a native of Heraklion, Crete (then under the Republic of Venice). He later became the Greek Pa ...

and ratified (a somewhat amended text of)

Peter Mogila Petro Mohyla or Peter Mogila (21 December 1596 – ) was the Metropolitan of Kiev, Galicia and all Rus' in the Ecumenical Patriarchate of Constantinople in the Eastern Orthodox Church from 1633 to 1646. Family Petro Mohyla was born into the ...

's ''Expositio fidei'' (''Statement of Faith'', also known as the ''Orthodox Confession''), a description of Christian

orthodoxy Orthodoxy () is adherence to a purported "correct" or otherwise mainstream- or classically-accepted creed, especially in religion. Orthodoxy within Christianity refers to acceptance of the doctrines defined by various creeds and ecumenical co ...

in a question and answer format.Creeds of Christendom, with a History and Critical notes. Volume I. The History of Creeds.
� 16. The Orthodox Confession of Mogilas, A.D. 1643. The ''Statement of Faith'' became fundamental for establishing the Eastern Orthodox world's attitude toward

Reformation The Reformation, also known as the Protestant Reformation or the European Reformation, was a time of major Theology, theological movement in Western Christianity in 16th-century Europe that posed a religious and political challenge to the p ...

thought. The major contribution of the synod was the reinforced sense of unity in the

Eastern Orthodox Church The Eastern Orthodox Church, officially the Orthodox Catholic Church, and also called the Greek Orthodox Church or simply the Orthodox Church, is List of Christian denominations by number of members, one of the three major doctrinal and ...

through the promulgation of an authoritative statement agreed upon by all the major sees.

References

Sources

Further reading