When I rededicated my life in 1987, I developed an intense desire to know more about the Christian faith. Today I have a fairly extensive (for a non professional) library of Bible reference books and various Bibles. Today I'm also a Deacon in my church and I lead an adult Sunday School class. The false Old Testament books were written by various people who wanted to try to get some claim to fame by writing something religious. In the New Testament period the same thing happened, but mostly by Gnostics in the N.T. The Hebrew people put together the list of Old Testament books. The extra O.T. books in the Catholic Bible are some of the more trustworthy old books, but still not conical. They are interesting to read; and especially for those interested in the period between the Testaments, I recommend them. Although there is much in them that does not pertain to the period between the Testaments. And there is some stuff that is questionable, but not much. Most people don't know that the final list of 27 books we know today as the New Testament weren't agreed on until about AD 375 or so the best I can remember without looking it up. Back then books of the New Testament were written to circulate around the Church's of that day by the early Church leaders. But a lot of false books were also written during that time frame by people who claimed to know what they were doing. By about AD 125 there were a list of about 21 or 22 books of what we today know as the New Testament; that most Churches possessed. One Church might have a few other books that other Churches didn't have. That list frequently included some Gnostic or other false teachings as well at that Church. So there was no universally agreed on Canon for a long time. So finally late in the AD 300s a big Church conference was called to settle what books belonged in the New Testament. They came up with the list of 27 we use today, in both the Protestant and Roman Catholic Bibles. Although some people still argue about some of the N.T. books. For instance Luther wanted the book of James removed from the N.T. And he published his Bible with it moved to a separate section in the back of his Bible.