Prior to Jesus time, the Jews did not have a sharply defined, universal canon of Scripture. Some groups of Jews used only the first five books of the Old Testament (the Pentateuch); some used only the Palestinian canon (39 books); some used the Alexandrian canon (46 books), and some, like the Dead Sea community, used all these and more. The Palestinian and Alexandrian canons were more normative than the others, having wider acceptance among orthodox Jews, but for Jews there was no universally defined canon to include or exclude the deuterocanonical books around 100 A.D.The Apostles commissioned by Jesus, 5 however, used the Septuagint (the Old Testament in Greek which con- tained the Alexandrian canon) most of the time and must have accepted the Alexandrian canon. For example, 86 percent of Old Testament quotes in the Greek New Testament come directly from the Septuagint, not to mention numerous linguistic references. Acts 7 provides an interesting piece of evidence that justifies the Apostolic use of the Septuagint. In Acts 7:14 St. Stephen says that Jacob came to Joseph with 75 people. The Masoretic Hebrew version of Gen. 46:27 says 70, while the Septuagints says 75, the number Stephen used. Following the Apostles example, Stephen clearly used the Septuagint. In the mid-twentieth century, Dead Sea Scrolls scholars discovered older Hebrew manuscripts that agree with the Septuagint rather than the Masoretic texts. The Septuagint was not only used by the Apostles, but in some cases it was more accurate.
6 (We also know from other ancient Christian documents, like the Didache 7 and Pope St. Clements Letter to the Corinthians, that the apostles successors not only used the Septuagint, but quote from all of the books in the Alexandrian canon as the authoritative word of God.) There is no divinely inspired table of contents for the Bible, therefore, Christians need an authority, like the infallible Church established by Christ, to discern which books are the divinely inspired ones. (Indeed, even if there were such a table of contents list, we would need an authority to tell if the list itself were inspired.) Even many Evangelical Protestant Bible scholars admit this:
While we know that at the time of Jesus there were different canons of the Old Testament because the canonical process was not yet complete, the glorious truth is that God has invited humans to be partners in the putting together of Scripture. I think the implications are that you cannot have Scripture without the community of faith [in other words, the Church]. Its not just a private revelation. God gives us Scripture, but then the [Church], by Gods guidance, has to choose whats in and whats out.
Full discussion here.
You want to try and pull theology from these books? Fine, but it's your own mortal soul at stake. Please, I emplore you take time with sufficient prayer and let God show you what He's always been trying to tell the world in the Bible. Use your God-given intellect and search and look for yourself.