If the rebirth of a new organism did not take place every time the old organism totally failed the evolution of the being in question would have to cease totally since real evolution cannot take place on the spiritual plane

What is the correctly punctuated version of this sentence?
If the rebirth of a new organism did not take place every time the old organism totally failed, the evolution of the being in question would have to cease totally, since real evolution cannot take place on the spiritual plane.