The Eastern Orthodox Church is one of the oldest Christian traditions, tracing its roots back to the early Christian communities established by the apostles. It is characterized by its rich liturgical life, adherence to the teachings of the early Church Fathers, and a strong emphasis on the sacraments, particularly the Eucharist. Comprising several autocephalous (independent) churches, the Eastern Orthodox Church is united in faith and practice but diverse in cultural expressions. It plays a significant role in the spiritual lives of millions, particularly in countries like Greece, Russia, and Serbia, where it influences both religious and social life.