The Possuk in Yeshayohu 51:4 states: הַּקְשִיבו אֵלַּי עַּמִי ולְאומִי אֵלַּי הַּאֲזִינו כִי תוֹרָה מֵאִתִי תֵצֵא ומִשְפָטִי לְאוֹר עַּמִים אַּרְ גִיעַּ “Hearken to Me, My people, and My nation, bend your ears to Me, when Torah shall emanate from Me, and My judgment [shall be] for the light of the peoples, I will give [them] rest”. Which the Medrash writes: Rab Ovin Bar Kahana says: Hakodosh Boruch Hu said that a new Torah will emanate from me. A Chidush in Torah will emanate from me. (Vayikra Rabbah 13:3)
Elsewhere it says: “In the future Hakodosh Boruch Hu will sit and expound a new Torah which He will give through Moshiach in the future. This new Torah will be incredible and unique to the extent that it will make our current Torah that a person studies in this world seem like hot air in comparison to the Torah of Moshiach. (Koheles Rabbah 11:7).
