TEACHINGS
An ever-growing number of persons from various backgrounds are becoming interested in the Orthodox Church. These individuals are discovering the ancient faith and rich traditions of the Orthodox Church. They have been attracted by her mystical vision of God and His Kingdom, by the beauty of her worship, by the purity of her Christian faith, and by her continuity with the past. These are only some of the treasures of the Church, which has a history reaching back to the time of the Apostles.
The Orthodox Church throughout the ages has maintained a continuity of faith and love with the apostolic community which was founded by Christ and sustained by the Holy Spirit. Orthodoxy believes that she has preserved and taught the historic Christian Faith, free from error and distortion, from the time of the Apostles. She also believes that there is nothing in the body of her teachings which is contrary to truth or which inhibits real union with God. The air of antiquity and timelessness which often characterises Eastern Christianity is an expression of her desire to remain loyal to the authentic Christian Faith.
Orthodoxy believes that the Christian Faith and the Church are inseparable. It is impossible to know Christ, to share in the life of the Holy Trinity, or to be considered a Christian apart from the Church. It is in the Church that the Christian Faith is proclaimed and maintained. It is through the Church that an individual is nurtured in the Faith.
Source: https://www.nativityofchrist.org/our-faith-2/teachings/