-_- someone doesn't understand how rare books and literacy were in the past. To write a bible by hand word for word would take years, many churches even by the Middle Ages would have but 1 bible to share for the whole town, and we are talking about more than a thousand years prior to that for when the original biblical texts were written. Even if somehow each account was written as it happened, it still would have been spread primarily through oral tradition, otherwise the religion wouldn't have spread fast enough to match how fast it historically moved. In addition, like I said, books wear out, and never forget translation issues. And even if Moses himself wrote accounts of what happened to him as they were happening, he would have still had to summarize, would have forgotten details, because any human author is going to have human limitations.