Given enough time anything possible will happen? Not necessarily, and that is the problem - we hypothesize possible paths life might have taken, but the further back we go the harder it becomes. Theres some evidence that RNA could abiotically lead to heredity, long before DNA existed, in combination with another theory (molecular cooperation theory), wherein if it came to be enclosed in a membrane it would replicate much faster than anything else. But the evidence only points towards RNA strands of length 14 as of yet...we just don't know enough yet to say that this is how it happened. It doesn't yet disprove the work of the divine at all.