Fourth Horseman in Egypt

If God is all-powerful he should have no problem finding a way to communicate with us. He supposedly created us, so he knows exactly how we function. He should be able to speak any language to anyone at any time without killing them, otherwise he is not all-powerful.

Well, some suggest the angels have no concious of their own (though honestly, I have no clue), so it's possible they're just a creative way for him to do just what you said. If they have no will of their own, and were created to be his uses, then aren't they really just.... like... limbs? More-or-less he did find a way to communicate, and looked really neat doing it.

Metatron translates to "Voice of God" for reference.