Victor had a great comment
here.
What does an icon do that is different from a text or spoken word?
It represents multiple elements simultaneously. This is different from reading and hearing which are both chronological activities. Musical harmonies are a little closer as they present multiple notes simultaneously, yet the harmonisations are in series over time whereas the full harmony of the icon is always present from the first glance. The extent to which we appreciate this fullness, the elements we attend to most intently, the thoughts that come to us while viewing the icon; these are also stretched out over time but their distension is internal and subjective, defined by our response to the image.
I think this speaks to why we have canons governing the writing of icons. They are meant to not only instruct us by presenting the truths of theology to us. They are meant to shape how we see the created order, to become our very way of seeing. They are not so much a discursive argument as an instrument of vision. Like telescopes or microscopes, revealing things hidden to the naked eye. But these other instruments merely enhance physical vision whereas icons correspond to a natural faculty within the person (the heart) which is built to perceive the world timelessly (Eternity is set in our hearts Ecclesiastes 3:11). This means, I think, that image is a means of representing eternity that cannot be expressed in text or sound. Icons are images attuned to the natural functioning of this organ and have about them a living stillness, a visual hesychia
.I feel this connects to the theology of image but in a way difficult to express in words
sorry to trail off here
V