A Jew is an arab (in Hebrew; "mixed"). The bible explicitly talks about this. The Judahites were taken into captivity. Later the lands were conquered. The Judeans went into and came out. But not entirely whole. Many cross bred with many other races (and ethnicities). Which is why they are now arab. There are some Jews who actually have Hebrew bloodlines but a mix. There are some Jews who are not related to Hebrews. There are many who crossbred with the Amaleks and Babylonians and Phoenicians, and so on and so on... Many of these in turn crossbred. Some of which are of Hebrew bloodlines. Some not. Regardless, they largely crossbred with non-Israelites and non-Judeans. Which is why Jews are arabs. The link I provide above confirms today's arabs (example, Palestinians) are basically Jews. And Jews are basically Palestinians. This is in addition to the number of people who were already practitioners of Tradition of the Elders is Babylon and many surrounding lands. Which in turn includes many other peoples (races and ethnicities). Obviously you can understand how this creates much confusion and opportunity for conflation.

The religion carried back out of Canaan by the arab Jews and back into Judah is the Babylonian Tradition Of The Elders. Which they then wrapped with a facade of Hebrewism. The result is Judah was a very mixed land at this point who had all but abandoned Hebrewism (some still did - they are Judahites). But all of these people were collectively called Judeans at this point. As a result, a ton of people called themselves Judahites and attempted to not only falsely claim lineage as Tribe of Judah and associated privilege, they also usurped the Tribe of Levi and established themselves as the new religious clergy class. Itself a sin against God and Hebrewism.

In this mixing is why Jesus harshly rebukes them when they declare they too are the children of Abraham. He says they are of the seed (mixed) but that their father is Satan (Amaleks, Canaanites, etc., ...). This gets even more confusing because most of these people come from Noah in some form or fashion. Though it is implied, as it was in Eden (Cain & Nod and other cities), Satan had also made/corrupted new groups of people. This is why the Amaleks were commanded to be genocided by God. Some of whom now called themselves Judeans.

IMOHO, "Jew" is the attempt to correct the record in the distinction of Judahite (directly from Abraham) vs Jew (arab and the great mixing).

In short, Christianity is the direct response to the corruptions of Jews and Satan upon the world. This is why "judeo-Christianity" is a complete lie. Christianity responded to their corruption. The response to Christianity is the formal creation of Judaism and Islam (created by a white, blue/grey eyed, red haired guy named Mohammed).

See here for another comment on some of this: https://poal.co/s/Jewspiracy/585332/e3bb333e-41fc-4dcd-838c-5f33322d420d

Start here for a deeper dive: https://poal.co/s/Jewspiracy/585332/e1256423-23c3-43cb-b981-0f9e2e9df91a

What do you even call a jew then?

A Jew can be a racial/ethnic Jew. Jesus' step-father Joseph can be considered a racial Jew. But because Jesus and his step-father have no genetic link, Jesus is not a Jew just because Joseph was.

A Jew can be someone who practices Judaism. Jesus Christ practiced Christianity. Hence the "Christ" in "Christ"ianity.

The arguments about modern "Jews" and their links (or lack of links) to religions and peoples of the past are irrelevant. Jesus has no genetic link to his step-father, and Jesus practiced the religion he created, Christianity.