So... I know the Torah is true because the Torah tells me millions of people were there. I'm glad you realize how circular that is. ;-) From a completely skeptical perspective: there is no extrabiblical evidence that there were two million Hebrews at Sinai, and even if there were, there is no evidence other than the Torah itself of what they saw or heard. So that's hardly a convincing argument!

"Let's see you fool millions of people in a short time-period of the divinity of a 'religion.'"

If this is your criterion for judging true revelation, then you should be a Muslim. No religion has EVER spread as quickly as Islam.