The Quran has some interesting information about the authenticity of the Rabbinic scholars. The Jews are accused of concealing the Torah or at least much of it from the people. Some of it must be the "kabbalah" or "Zohar", and other books.
Surah 6:91, " And they did not appraise Allah with true appraisal when they said, " Allah did not reveal to a human being anything." Say, "Who revealed the Scripture that Moses brought as light and guidance to the people? You [Jews] make it into pages, disclosing [some of] it and concealing much. And you were taught that which you knew not - neither you nor your fathers." Say, " Allah [revealed it]." Then leave them in their [empty] discourse, amusing themselves."
The Quran asserts some Jews distort the Torah as well by deliberately changing it.
Surah 2:75, "Do you covet [the hope, O believers], that they would believe for you while a party of them used to hear the words of Allah and then distort the Torah after they had understood it while they were knowing?
The Jews change the letters in words (this is kabbalah) to distort or change its meaning. The Quran ahead of its time taught about this topic in the following Surah:
Surah 5:13, "... They change the words from their (right) places and have abandoned a good part of the Message that was sent to them. And you will not cease to discover deceit in them, except a few of them."
The Quran highlights an incomplete set of scriptures sent down from heaven. Our role is to find the truth using all the scriptures of God including the Holy Quran. We are not to be anti Judaism but need to study the Torah to grasp the hidden meanings of the Quran.