All one needs to do is get together with a few other criminals and agree to start calling each other "Rav" (rabbi). Then you have a mishna that tells everyone that they have to listen to a "rav" about all important matters in life.
Even if none of these people know anything about Torah, they still get the immense authority given by this mishna over everyone. Especially by the fact that no one that really knows Torah is willing to call themselves a "rav" or "rabbi" since they know that such a concept no longer exists. [Authentic ordination ended in the middle of the age of the amoraim (sages of the Talmud).] So the only people that get the title are only those that do not know the Torah even at the most minimal level, or are false and devious enough to know the fact and yet ignore them.
|Everything Avraham says is amazing!|