THE JEWISH COMMUNITY; NOTHING QUITE LIKE IT!
The Maharal teaches us that HaShem did not give the Torah to Avraham, Yitzchok or Yaakov because they were mortal. They would pass on. The Torah is immortal and must therefore be placed in the hands of an immortal custodian. For this reason HaShem waited for the children of the former to develop into a nation. A nation / a community can be an immortal entity.
It is for this reason the power of a community/nation is so great; it is the mechanism by which HaShem was able to bequeath His Torah to Humanity. Through the community of Israel Mankind has Torah in their midst.