For our faith, brethren, is not of men nor by man, but by revelation of Jesus Christ, which the divine Apostles preached, the holy Ecumenical Councils confirmed, the greatest and wisest teachers of the world handed down in succession, and the shed blood of the holy martyrs ratified. Let us hold fast to the confession which we have received unadulterated from such men, turning away from every novelty as a suggestion of the devil. He that accepts a novelty reproaches with deficiency the preached Orthodox Faith. But that Faith has long ago been sealed in completeness, not to admit of diminution or increase, or any change whatever; and he who dares to do, or advise, or think of such a thing has already denied the faith of Christ, has already of his own accord been struck with an eternal anathema, for blaspheming the Holy Ghost as not having spoken fully in the Scriptures and through the Ecumenical Councils. This fearful anathema, brethren and sons beloved in Christ, we do not pronounce today, but our Savior first pronounced it (Matt. 12:32): Whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come. St. Paul pronounced the same anathema (Gal. 1:6): I marvel that ye are so soon removed from Him that called you into the grace of Christ, unto another Gospel: which is not another; but there be some that trouble you, and would pervert the Gospel of Christ. But though we, or an angel from heaven, preach any other gospel unto you, than that which we have preached unto you, let him be accursed. This same anathema the Seven Ecumenical Councils and the whole choir of God-serving fathers pronounced.
Our Church holds the infallible and genuine deposit of the Holy Scriptures, of the Old Testament a true and perfect version, of the New the divine original itself. The rites of the sacred Mysteries, and especially those of the divine Liturgy, are the same glorious and heartquickening rites, handed down from the Apostles. No nation, no Christian communion, can boast of such Liturgies as those of James, Basil, Chrysostom. The august Ecumenical Councils, those seven pillars of the house of Wisdom, were organized in it and among us. This, our Church, holds the originals of their sacred definitions. The Chief Pastors in it, and the honorable Presbytery, and the monastic Order, preserve the primitive and pure dignity of the first ages of Christianity, in opinions, in polity, and even in the simplicity of their vestments. Yes! (Paragraph 20-21)