Holy Tradition is the faith of the Church. It is not subject to additions or redactions by those with an agenda. It is maintained and protected by Apostolic Succession. Alongside Scripture, God gifts His children with the theological, spiritual and instructional writings of the Church Fathers. One such writing is the Didache (c. 80), which includes instructions for Church services and organization.
Staying true to these traditions protects the Church against heresy, schism and petty internal disputes over worship music and such. The practices of the Church are timeless. She is not a slave to fashion. In fact, the more the world changes, the more beautiful her ways are to the disenchanted.
For those of us who came from non-liturgical denominations, or non-denominational groups or atheism, the Orthodox Church was a new world. At first, we did not feel at home, but we had investigated enough to know there was something to it, so we moved forward by faith. We continued to read, to attend services and to pray. After a while, the liturgy became familiar. Instead of trying to keep up, we stepped out of time and settled into the moment. At last, we could lose ourselves in the worship of God. We had found the “pearl of great price.”
But, suppose a year later renegade bishops decide to do away with the ancient liturgy for financial, political or societal reasons. Instead of heaven on earth, church services become a matter of practicality. Convenience replaces beauty. The pearl of great price is sold to the cheapest bidder.
The Lord will not allow this to happen! He provided Holy Tradition to guard against this very thing; therefore, His Church is alive and well. Thanks be to God!
But we are bound to give thanks to God always for you, brethren beloved by the Lord, because God from the beginning chose you for salvation through sanctification by the Spirit and belief in the truth, to which He called you by our gospel, for the obtaining of the glory of our Lord Jesus Christ. Therefore, brethren, stand fast and hold the traditions which you were taught, whether by word or our epistle.
The Second Epistle of St. Paul to the Thessalonians 2:13-15
But we command you, brethren, in the name of our Lord Jesus Christ, that you withdraw from every brother who walks disorderly and not according to the tradition which he received from us.
The Second Epistle of St. Paul to the Thessalonians 3:6