Breathe
Hostis humani generis
Nope, this is a very common belief regarding the nature of God. The "Divine-mundane" dualism is not something found everywhere. It is you who is limiting what is Divine to something that is solely beyond the mundane instead of being both mundane and supramundane.So in other words, you are redefining something as "divine" and then using it as an argument for the existence of the divine.
See, now you're just being plain old silly. What use is a reductio ad absurdum here, really?By this logic, I can prove that Smurfs are real, provided I redefine Smurf to include my television.
Smurfs are already clearly defined. The same is not true when it comes to Divinity, except for in your opinion where the Divine is something utterly transcendent, dualist, and supramundane.
Secondly, there is no "redefining" being done here, this is just another view of God.