Have you ever played telephone? Messages get distorted in a couple minutes. Thousands of years is plenty of time to be easily believe that people would deviate on various gods.
A god should be supernaturally good at telephone, right? Otherwise it brings would open up some pretty uncomfortable questions for folks who follow the teachings of modern translations of their books.
This strikes me as a pretty powerful argument against trusting the Bible (and other scripture older than a few hundred years), especially since we have a ton of evidence that distortion is exactly what happened. Even just reconciling the four gospels requires some pretty serious "interpretation."