פירוש על עבודה זרה 17:6

When do we start counting the two thousand years of Torah? If you start counting at the actual giving of the Torah on Sinai, it was not 2000 years. If you start counting at creation, there are more than 2000 years before the Torah was given. The Torah was given at year 2448 from creation, and therefore the time of the Messiah will begin before the 2000 years of Torah end, assuming the world will last only 6000 years.