The hole doesn't look like a tunnel. i needed another reference to religion too so it would be more deliberate. If i put a religion reference in the upper right hand corner that might work. Then when you look at the photo (not this particular im redoing it now that i think about this) you are wondering why you are looking through a hole or tunnel, which is the first thing that would attract attention. so the eyes should move up and the next spot people would look i would guess would be that upper left hand corner as they follow it from the side across. then they would hit the 1,2 and end up back down the tunnel. That would probably be easier to follow. im still thinking about it , obviously. i cant argue the refining. it needs more eye candy and attraction, to be cleaner. How im going to redo this, is the question...
Do you want the viewer to even see what is "outside" of the tunnel?
A conical tunnel (make a cone, stick the lens inside the big end) would probably get the "tunnel" effect across better. Of course, then you will ONLY see the tunnel, which may work better anyway.
Maybe instead of a bill split down the middle, have the light coming from a cross burned through the center of the bill. Just something that came to me looking at your photo after hearing more about your intentions. That would definitely get both the religion and the "lie" part in there. [edit - well, the money lie anyway. If "religion is a lie" is what you want to say, it wouldn't work so well for that. I think that could be a good photo, it just may not be what you want to say.]
You'll want a little bit of light spillage inside the tunnel too, to show that it is actually a tunnel. The light coming from the hole might be enough for this. If not, a small flashlight shining into it from behind the camera ought to do the trick.