Your ignorance is showing.
Human beings "authored" the Na"KH, but G-d Alone wrote the Torah. It was written 974 generations before the Creation of the World, in letters of black fire on a scroll of white fire. The Torah is the logos, the DNA, the blueprint of the Creation.
In the 26th generation of the world the Torah was given to Israel. G-d dictated it to Moses letter-by-letter, and Moses wrote it down. This is, as you Catholics say, the "ancient and immemorial tradition." Granted that you are just as bad as Protestants in rejecting the Tradition that preserved and interpreted the Bible prior to chr*stianity, but this only means you are more hypocritical than Protestants. AT least they don't attack Jewish Tradition as "doctrines and commandments of men" and then turn around and start defending "apostolic tradition" from that same accusation.
I'm really sorry that so many chr*stians don't have the slightest idea of what Judaism teaches about the Torah. I'm afraid you liberal chr*stians are getting your "Judaism" from liberal "reform" groups. Orthodox Judaism had a perfect-G-d authored book long before islam ever appeared on the scene.
You have an amazing amount of venom. We can discuss this again when you join civilization.