WHAT is the Orthodox Church? The Orthodox Church is a body or community of people, who, 1—correctly believe in divine revelation; and 2—who obey a lawful hierarchy instituted by our Lord Jesus Christ himself, through the holy apostles. In order to belong to the Orthodox Church two principal conditions are required: First—to accurately accept, rightly understand and truthfully confess the divine teaching of faith; and secondly— to acknowledge the lawful hierarchy or priesthood, to receive from it the holy mysteries or sacraments, and generally to follow its precepts in matters concerning salvation.
“If from one burning lamp someone lights another, then another from that one, and so on in succession, he has light continuously. In the same way, through the Apostles ordaining their successors, and these successors ordaining others, and so on, the grace of the Holy Spirit is handed down through all generations and enlightens all who obey their shepherds and teachers.”
+ St. Gregory Palamas, “On how the Holy Spirit was manifested and shared out at Pentecost”
“The power to bear Mysteries, which the humble man has received, which makes him perfect in every virtue without toil, this is the very power which the blessed apostles received in the form of fire. For its sake the Saviour commanded them not to leave Jerusalem until they should receive power from on high, that is to say, the Paraclete, which, being interpreted, is the Spirit of consolation. And this is the Spirit of divine visions. Concerning this it is said in divine Scripture: ‘Mysteries are revealed to the humble’ [Ecclus 3:19]. The humble are accounted worthy of receiving in themselves this Spirit of revelations Who teaches mysteries.”