John Durham Peters writes on media and theology:
Any theology of revelation is necessarily also a theory of media. Theophany is a media problem. God needs to assume a sensory shape or work sensible effects to reach humans the classic theological issue of the Word made flesh. Any revelation is, in a way, a short-term incarnation. A burning bush, clouds of smoke and pillar of fire, thunder, voice, writing, and a highly selective glimpse of God as he departs are some of the various modes of theophany surrounding the revelation on Sinai. The mountain itself is a kind of medium, which is declared holy ground and off-limits to the footsteps of the children
of Israel.
I don’t have time to develop this at the moment, but I think we ought to consider the church as a kind of medium, communicating Christ to the world.
Christian Leithart 