We don’t believe in trying to open the head and dump in knowledge. You can’t gain knowledge of Orthodoxy that way. You might be able to learn some of the garments surrounding Orthodoxy, but not the spirit itself.
Catholics believe in a “beatific vision” that in Heaven we will see God as he truly is. Orthodox call that heresy. God can reach out to us and we can meet him when he reaches out, but it is radically, utterly, and absolutely impossible for us to ever know God as he truly is. Neither our being divine by grace nor our glorification in Heaven can ever overcome God’s absolute transcendence.
Christ is really incarnate in every member of the Church, and the Incarnation is not an anti-natural exception, but the pattern for being Christian. The purpose of being Christian is what Orthodox call “theosis,” or “divinization,” or “deification.”
The liturgical rites of all the Eastern Orthodox Churches can be traced back to the original rite in use in Jerusalem prior to the Apostolic missionary activities to the Gentiles, and the subsequent persecutions that moved the Christian Church out of Judea and across the Mediterranean basin and beyond. The Apostles took with them the liturgical rite, developed as it was at the time. This became the basis of the Eucharistic service for the Church. The early Christian Church was not characterized by written rites that were carefully adhered to, but followed a highly regarded oral tradition of Eucharistic prayers.
Man was created with free will. Its power was compromised by the fall. It is further dimished by delusion and the passions. We escape them through true faith, worship and fasting. Our freedom increases as these negative forces decrease.
The Descent of Christ into Hades in Eastern and Western Theological TraditionsBy Bishop Hilarion (Alfeyev) - A lecture delivered at St Mary's Cathedral, Minneapolis, USA, on 5 November 2002
Juan Mateos, S. J.\nOriginally published in: John XXIII Lectures. Vol. I. 1965. Byzantine Christian Heritage. John XXIII Center For Eastern Christian Studies. Fordham University, New York (Bronx), N. Y. 1966.