Christology
Orthodox Christians believe in the dual nature of Christ. He is both 100% God and 100% human, Perfect God (τέλειος Θεός) and Perfect Human (τέλειος άνθρωπος). Throughout the ages this has been a point of contention between Christian break away groups (Heterodox) and the mainstream believers (Orthodox). This means that Christ had a divine will and a human will. He had a human body able to suffer the same way as we would, but at the same time, He was perfectly divine and could not suffer corruption. "That he should still live for ever, and not see corruption." (Psalm 49:9 KJV).
Orthodox Christians believe that Jesus Christ is the Messiah, Saviour and Son of God and that he was begotten before all ages. "Jesus said to them, "Very truly, I tell you, before Abraham was, I am." (John 8:58). Eastern Orthodox Christology has not changed since the Christian Church started. Orthodox Christians believe in the Death and the Resurrection of Jesus, that Jesus truly did rise from the dead after being buried for three days in a tomb. The feast of the Resurrection of the Lord, which is referred to as Easter by many Western Christians, is called Pascha by the Orthodox Church. The word Pascha is taken from the Hebrew word Pesach meaning Passover. The Resurrection of the Lord Jesus Christ is the Christian Passover. Pascha is called the Feast of Feasts and is considered the Greatest feast of all the feasts of Jesus Christ, including Christmas. Christmas is classed as second in importance after Pascha (Easter).
Read more about this topic: Eastern Orthodox Christian Theology