The worlds inability to destroy the Jewish people (i.e. their continued existence) is one of two examples given as evidence that they were chosen to be put through the (almost) never ending furnace of testing, i.e. the covenant.

The Jews were promised to be a byword in every nation, hated and persecuted. Ironically, those that fight the Jews are fulfilling this prophecy by their actions and (seemingly irrational) hatred; the very act of pushing someone into a corner makes them fight for all their life, and over many generations weeds out the weak and leaves only the strong.

That isn't to say people of Hebrew decent are all good and noble. It is the evil actions of the few that paint the rest with the same brush. But it is also the shunning and scapegoating of the Jews that forces them into trades that are uncommon, and in turn those talents that become highly prized because they are so rare and hard to come by. Jewelry, gold and silver smithing, diamond cutting, money lending and borrowing, politics, acting, entertainment, lawyers, doctors, advisers, investors, bankers, musicians, artists and any other talent that is deemed worthy of achieving because it was all the scattered Jews could do to survive over the centuries.

Each time the Jews are pushed into another corner, they are forced to become stronger. I consider it a litmus test of common intelligence; if people who hated the Jews were actually intelligent, they would not be sharpening iron with iron, making the enemy they hate stronger with each generation. Even Henry Ford got duped into the scapegoating (a Jewish term, lol), publishing far and wide his hatred for the Jews.