東正教, or the Eastern Orthodox Church, is one of the oldest branches of Christianity, tracing its roots back to the early Christian communities established by the apostles. It emphasizes the importance of tradition, sacraments, and the teachings of the Church Fathers. The church is organized into various autocephalous (independent) jurisdictions, each led by a bishop. The Eastern Orthodox Church is known for its rich liturgical life, including the Divine Liturgy, which is central to its worship. It also places a strong emphasis on icons, which are religious images used in worship and veneration. The church has a significant presence in countries like Greece, Russia, and Serbia.