Originally Posted by OneManArmy
And what happens if the one who uses the Wish spell wants to get a Divine rank?

How can a mortal get Divine rank, only through Wish?
Wish spells aren't really without limits. So I mean you could try wishing to be a god but it probably wouldn't work. If on the other hand you wished to resurrect someone who died centuries ago that could probably be allowed...it would basically be a true resurrection spell but maybe with a longer range of time than two centuries so a DM might allow something like that. But really the functionality of the spell is so undefined that it's basically whatever the DM allows.