Take an arab-euro mutt make him believe he is part of the so called Jewish tribe, make him believe in a fake version of history that has this tribe being persecuted for thousands of years.
Tell him that goyim aka non-Jews are born with an intense hate for Jews.
Now you have a bunch of neurotic arab-euro mutts who believe everyone is out to kill them.
They will now prefer to work with other Jews and have schizophrenic distrust of goyim.
Together the so called Jews will work on a way to stop the goyim from destroying them.
This is the simple memetic commands that make a Jew a Jew.