Does God Speak in a Word Balloon?

As a comic book artist, and as the author of a Jewish graphic novel, I'm fascinated by the visual conventions we in the comics biz use to represent speech, thought, and feelings. The word balloon is an awesome creation. It floats above the heads of those speak, so that we can "read their minds", as it were. A pointer to the speaker quickly identifies for us who is doing the speaking. I wonder, when God spoke to Moses (pick your favorite scene), WHERE would the word balloon be? Of course, we could just point the word balloon skyward, and I'm sure everyone would get the idea, but is God really in a cloud? Or is He everywhere? If God is everywhere, then the word balloon would point nowhere. Maybe it would just be a disembodied sound effect floating in the air. But when Moses talks to God, I'm sure that Moses would have a word balloon point to his mouth. Representing God as a word balloon is a tricky idea, because it immediatly makes some assumptions: that God has a mouth, that God has a voice, and that God's voice is coming from somewhere that can be pointed at (with a word balloon). Throughout the Bible, God has spoken to Man by the use of various agents of vessels, such as the burning bush, the firey cloud that followed the Israelistes during their wanderings in the desert, and the talking ass (the equestrian type) in the story of Balak and Balaam. How is a comic artist to represent talking to God, but to do it in a respectful way? The easy thing to do would to just point a word balloon skyward and forget about it. But that simple act creates the assumption that (as already noted) that God has a mouth, a voice, and a physical place in the world. But it also introduces the feelings that we get from comic books; a kind of sassiness. Can that attitude exist in the Hebrew school or the prayer service, and still contribute to an aura of holiness and respect. That's an issue with which I often struggle. You want to be readable, and accessible, but you don't want to be a joke. You've got to straddle the line between the sublime and the ridiculous. That ridge is where the heart of the Comic Book Siddur resides. If I did my job correctly, you'll feel the frission.