The bible doesn't evolve as it is a set book now. A decision from the various religions that use to make changes to it could occur, and a variety of versions created as a result, but if it is redone too much then that's a different book.
A deity, as we now define it, isn't going to evolve as it has to be timeless. In any cases species evolve not individuals. That doesn't mean one might not see different aspects of an unchanging deity as time changes for us.
Religions can and do go through reformations. But again if the change is too great then it is a different religion, not the same one that has come to terms with reinterpreting its beliefs to fit what is now known. However not every religion manages to go through this type of transformation often enough. Too much reliance on the wisdom (and reverence) of the ancients, not enough (or not quick/often enough) reappraisal and update to a better model. That said when you have something based on faith of divine revelation it must be difficult to convince the masses that you all didn't have it quite right before, and this new view is what they should now believe. Religious revolutions excepted, it'd may sound like saying they have to adopt a new religion from here onwards.