The Torah that will be revealed in the Messianic era is referred to as the light of Mashiach. It is mentioned many times in the Prophets and Writings and in our prayers. It is a new light in the sense that it has never been revealed before, that it is the most powerful light, it is the most powerful truth that the world will ever experience. This light is very unique in the way that when you see it and you attain the truth of this particular revelation, you see very clearly with an absolute certainty that G-d exists and that His will is the sole will that guides creation. It will be known and clearly seen with absolute certainty that G-d is Lord, there is none other besides Him.