While I think the OP is a little poorly formulated, I see where he is going and want to enjoy the ride.
The question is, if I get it rght:
If the god of the bible (GOB) is as vengeful, violent and jealous as he is portrayed in that annoying bestseller, why has he simply not destroyed the other pretenders to his rule?
If he saw the rise of Muhammad in the 5th century, why not do a little lightning action?
Why not drop a meteor on L.R Hubbard?
Basically, if GOB is so powerful and willing to use that power, why hasn't he brought it to bear on the competition?