The document provides an overview of Orthodox Christianity, including its history, beliefs, worship practices, and sacraments. Some key points:
1) The Orthodox Church is one of the three main Christian groups and has around 200 million followers. It is composed of self-governing churches that are either autocephalous or autonomous.
2) The Great Schism in the 11th century divided the church into Western (Roman Catholic) and Eastern (Orthodox) branches due to theological and political disagreements.
3) Orthodox beliefs and worship emphasize the Bible, traditions of the Church Fathers, fasting and prayer. Major sacraments include Baptism/Chrismation, Eucharist, Orders