The problem with responding, Hermes, is that you write:

"...the WORD 'God' can be used a verb to mean..."

We can't tell whether you intended to say:
"...the WORD 'God' can be used AS A verb to mean…"
or
"...the WORD 'God' can be used WITH a verb to mean…"

I would rewrite your last sentence, "God is God of all Gods"
as
'God is the god of all gods'

'God" is the actual name of the Christian god.
'god' is a superhuman being or spirit worshipped as having power over nature or human fortunes; a deity.

Of all these superhuman beings (gods), God is the god who is more superhuman than any of the other gods.