All people known today as Jews, Ashkenazi, Sephardi and others, are Pharisees.
"Jew" in modern context, simply means Pharisee.
There were multiple religious sects in Jesus time, but the "Jewish" sects rolled into Phrariseeism, i.e. Talmudism, i.e. Babylonian Satanism, i.e. Judaism.
Sects like the Essenes were extinguished. The balance converted to Christianity.
The European Khazars interbred with "Jews" and did not only "religiously convert", and the Ashkenazi Jews, their descendants have further interbred with other Jews since.
A DNA test will identify Jewish ancestry. Ashkenazi Jews have it. It doesn't need to be said but we probably need to, so anyway: 99+% of Europeans (& their diaspora populations) don't.
A non-ethnically Jewish person, who converts to the Jewish faith, almost always a person who has married a Jew, doing so for that purpose, is not considered a REAL Jew by Jew themselves, and certainly not by Jewish law or custom are they a Jew.
An Atheist Jew, who nevertheless is an ethnic Jew, as they come from a Jewish line, however, is ALWAYS considered a Jew.
Pharisees, those today we call "Jews" are first and foremost a race, and their religion is racial supremacist, in a form far more extreme than any "White supremacist" ever conjured up.
References to "those who say they are Jews but are not" basically refers to the Pharisees, which includes all who claim to be "Jews" today.
Many posit that it is actually White people who constitute the original Jews, who have no relation to the Pharisees, our modern Jews.
And if you wonder how the Jews can pull off a deception of such a magnitude, need I point you to 9/11, Kennedy's assassination, the Holocaust, the passing of the 1965 Hart-Cellar Immigration Act (on the basis it would not change national demographics), and the covid scam.
When you let a people control your financial system, your intelligence agencies, your government, your medial profession, your media, your academic institutions and have a handle in everything else through combined networks within the Jesuits and Freemasons, you get a pretty good lock on progressing these things.
The general public are mad (crazy), because they have been driven mad by the above.