Amen, mia.
Coelacanth, why the uncertainty and disagreement among believers? This is not complex at all, although it's obvious why apologists want to make it appear that way. You need some intellectual and philosophical wiggle room to maintain baseless claims.
The central point is simple and unambiguous, and it's the problem with organized religion in general: several billion people on earth today believe the creator of the universe has written a book. But there's more than one such book and the various texts are incompatible in important ways. People have been divided for centuries over these differences, to the point of fighting and killing each other over competing myths. It would be comical if the consequences of it all hadn't been so tragic.
Organized religion asks us to believe that a perfect being created a bunch of imperfect beings and then, tens of thousands of years later, commissioned some writings that were to be eventually compiled into a book, and said: Here, people. Read this. Some of it will make sense, some of it won't, and I'll leave it to you to figure it all out, knowing full well that competing faiths will emerge from the ambiguities and that billions will get it right while billions more will perish forever. Some divine plan.