NATIONAL REVELATION

Judaism is the only religion in history that claims that G-d spoke to the whole nation. 
All other systems start with one person or a few people — Buddha, Mohammed, Paul, Guru Nanak, Joseph Smith - who heard G-d or found enlightenment and then convinced everyone to follow them.
Why did no other religion in the history of the world come up with the same, much stronger, claim of mass revelation? 
Is it because it is impossible to get away with this claim if it didn't really happen?  
And even more incredible, if someone did pull it off in a natural way, why would they claim and how could they guarantee it wouldn't happen again?

The video begins with an introduction and the evidence begins at 12:16 if you want to skip forward.