Could you not attribute the confusion and strife to the Devil?
It is much easier to tear things apart from the inside. By creating so many followings that seem very similar you can easily mask the truth from being seen or heard. By having so many different denominations and churches it is easy for the Devil to create ones that mimic the truth on the surface, but do not actually preach it.
Just because there are a lot of different beliefs does not mean the correct one is non-existent. We will all find out what was correct in the end one way or another. Until then we should all make sure we have chosen correctly because I would not want to be wrong. We should all take a step back and evaluate what we really believe and make sure we would bet our life on it. **I am including myself in this as well**
Sure, we could attribute such strife to the Devil, but then we'd have to take our logical thinking down another road.
The most powerful being ever (God), had an angel who rebelled, and he became the devil. The most powerful being ever has "problems"? Really? Think about that.
How could the most powerful being to ever exist have "problems"? That alone is a ridiculous assertion if you really think about it. A god who created all that is known would have created the very concept of a "problem", wouldn't he? He did create EVERYTHING after all.
It would seem quite simple that the most powerful being ever would never have a "problem", and certainly not something as trivial as a angel he created, screwing up EVERYTHING for him. Oh wait, screwing up EVERYTHING for an unspecified amount of time, until God decides he's good and ready to get around to fixing everything again. *rolleyes*
Think about it. Just stop and think about the whole story. There are so many holes in it you can see right through it when you apply logical thinking to the facts as they are given to us in the bible.
Just 5 years ago I was a believer, but that was really only because I had a veil of fear that prevented me from admitting to myself that it all sounded ridiculous. Yes, this massive universe we live in is mysterious, and intimidating, but that doesn't mean it makes sense for me to believe in a story about this magic man that I can never see or hear from, but I'm just supposed to believe this book some guys wrote 2,000 years ago.
Science has the ability to make sense of it all though, and the more you learn about science the more you begin to see things for what they are. It's complicated, and it takes time to learn how these things work, but there are explanations for how we got here, and they're proven by actual research and data, and it can be understood if you educated yourself on it. It's honestly quite amazing when you do, because all the pieces fall into place. The more you understand things the way they really are, the more absurd the religious stories will sound.