Great Schism
1054 AD
📂 CHURCH
📖 About This Event
The Great Schism of 1054 marked the formal separation between the Western (Roman Catholic) and Eastern (Greek Orthodox) Churches, dividing Christendom into two major branches that remain separate to this day. The schism was the culmination of centuries of growing differences in theology, liturgy, practice, and church governance. Key issues included the Filioque clause (whether the Holy Spirit proceeds from the Father 'and the Son'), the authority of the Pope, the use of leavened versus unleavened bread in the Eucharist, and the celibacy of clergy.
The immediate trigger was a diplomatic failure. In 1053, the Patriarch of Constantinople, Michael Cerularius, closed Latin churches in Constantinople and issued a syllabus of complaints against Latin practices. In response, Pope Leo IX sent a delegation led by Cardinal Humbert of Silva Candida, who excommunicated Cerularius by placing a Bull of Excommunication on the altar of the Hagia Sophia on July 16, 1054. Cerularius, in turn, excommunicated the Latin legates. Though the excommunications were later lifted, the schism proved permanent.
The Catholic Church has worked toward reunion with the Eastern Orthodox Church through the Second Vatican Council's Decree on the Eastern Churches (Orientalium Ecclesiarum) and ongoing dialogue. Key Scripture: Ephesians 4:3-6; John 17:20-23; CCC 816-823
📜 Key Facts
Date
1054 AD
Category
Church
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