The Church has her origin with Jesus Christ and the Holy Spirit, not with a human teacher, or group, nor a code of conduct or religious philosophy. Orthodoxy believes that the Church has her origin in the Apostolic Community called into being by Jesus Christ, and enlivened by the Holy Spirit. The Feast of Pentecost, which is celebrated fifty days after Easter, commemorates the “outpouring” of the Holy Spirit upon the Apostles and marks the beginning of the mission of the Church to the world. The Orthodox Church believes that she has maintained a direct and unbroken continuity of love, faith, and order with the Church of Christ born in the Pentecost experience.
~Rev. Thomas Fitzgerald.