A theological and historical guide that introduces Orthodox Christianity to Western readers. This book examines the Orthodox Church's teachings, worship, spiritual life, and position in the modern world, as well as its relationship to other church traditions. It also explains the central role of liturgy in the spiritual life of Orthodox believers and how they have preserved the historical Christian faith since the time of the apostles. Furthermore, the author describes the Orthodox Church's journey after World War I and how it has adapted to changing times. Finally, the book examines the dynamics of theological dialogue and interaction between the Eastern Orthodox Church and the Anglican Church, the World Council of Churches (WCC), and other Western Christian denominations.