It was usual in the Ancient Church to introduce doctrinal statements by phrases like this: "Following THE HOLY FATHERS". The Decree of Chalcedon opens precisely with these very words.
The Seventh Ecumenical Council introduces its decision concerning the Holy Icons in a more elaborate way: "Following the Divinely inspired teaching of the Holy Fathers and the Tradition of the Catholic Church." The didaskalia of the Fathers is the formal and normative term of reference.
Now, this was much more than just an "appeal to antiquity." Indeed, the Church always stresses the permanence of her faith through the ages, from the very beginning. This identity, since the Apostolic times, is the most conspicuous sign and token of right faith-always the same. Yet, "antiquity" by itself is not an adequate proof of the true faith.
The true tradition is only the tradition of truth, traditio veritatis. This tradition, according of St. Irenaeus, is grounded in, and secured by, that charisma veritatis certum [secure charisma of truth], which has been "deposited" in the Church from the very beginning and has been preserved by the uninterrupted succession of episcopal ministry. "Tradition" in the Church is not a continuity of human memory, or a permanence of rites and habits. It is a living tradition—depositum juvenescens, in the phrase of St. Irenaeus. Accordingly, it cannot be counted inter mortuas regulas [among dead rules]. Ultimately, tradition is a continuity of the abiding presence of the Holy Spirit in the Church, a continuity of Divine guidance and illumination.
"Following the Holy Fathers"… This is not a reference to some abstract tradition, in formulas and propositions. It is primarily an appeal to holy witnesses. Indeed, we appeal to the Apostles, and not just to an abstract "Apostolicity." In the similar manner do we refer to the Fathers.
The witness of the Fathers belongs, intrinsically and integrally, to the very structure of Orthodox belief. The Church is equally committed to the kerygma of the Apostles and to the dogma of the Fathers. We may quote at this point an admirable ancient hymn (probably, from the pen of St. Romanus the Melode). "Preserving the kerygma of the Apostles and the dogmas of the Fathers, the Church has sealed the one faith and wearing the tunic of truth she shapes rightly the brocade of heavenly theology and praises the great mystery of piety."
St. Gregory Palamas