Though I think that rejection of these Icons is impious and a serious error I am beginning to wonder if it is a heresy in the full sense of the word. I have been wrong before and would welcome anybody showing me that it is a heresy with a capital "H".
Dear Theophan,
The heresy lies in the arguments used to deny these icons. One can often observe those who reject these icons using Arian and Nestorian arguments to defend their impiety. Those who reject these icons demonstrate by way of their fallacious arguments that they hold a number of improper conceptions regarding the nature of the Holy Trinity. It is also manifest that they fail to properly comprehend the distinction between the uncreated divine essence, which is uncommunicable, and the uncreated energies, which are communicable.
Those who venerate these sorts of icons are not "anthropomorphists" as some in their simplicity suggest. They are also in error when they assert contrary to the revelation of the Church that Christ alone is the Ancient of days. Once again this stems from their improper conceptions with regard to the Divine names.
The statement: "Jehovah has always been understood to be the Son and not the Father" is of course patently absurd and cacodox.
"Yet, the Ancient of Days is a symbol of God the Father, just as the dove is a symbol of the Holy Spirit."
Ahh, here we have an admission from our friend that depictions in icons are merely "symbols".
Why this earlier objection then?
"If it is understood to be an actual icon of God the Father, then yes it is heretical, as the Father is the unknowable Essence of the Godhead."
Who has ever declared in the Church that these icons were depicting the essence of the Father?
Certainly not St. John Damascene. Certainly not St. Theodore of Studium. Certainly not the Holy Ecumenical councils!
Act 6 of the Seventh Ecumenical Council: "An icon is not like the original with respect to essence, but with respect to hypostasis".
Our friend states: "We don't believe that the Third Person of the Holy Trinity is a bird."
Yet Holy Church depicts Him in icons this way now doesn't she? Since we are in agreement that the essence of the Holy Spirit is not a bird, and yet the Holy Spirit is depicted in icons in the likeness of a dove, what greater proof is there that the depictions of the Divine Persons of the Holy Trinity are not according to their essence, which is indeed unknowable, but is a depiction rather of their hypostasis?
Likewise we do not believe the First Person of the Holy Trinity has flesh and blood, and a white beard like a man, and is literally sitting on a throne in heaven -- and yet the Church depicts Him this way!
"We also don't believe that the unknowable, unapproachable Essence of the Godhead, Whom we will never know, is an old man with a white beard. "
Neither do the faithful in the Catholic Church believe such either. But as I just documented from the 7th Ecumenical Council, icons do NOT depict the essence. They depict the hypostasis of the Father.
St. Theodore the Studite explores this in depth in his treatise defending the Holy icons.
Cyprian