First of all, it is necessary to distinguish between a Jew as a follower of the Jewish religion and a Jew as an ethnic member. In German and most other languages, Jews are called Juden, which etymologically means Judean, an inhabitant of Judea, which does not necessarily mean a special nation. Rather, it is a designation of the native inhabitant of the state of Judea. What unites Jews is religion, not nationality, because there has never been anything like a Jewish nation and there is not (unless we take into account some extreme interpretation of the word nation or ethnicity).
People who are called Jews in the present modern era have a clearly European appearance at first glance, so there can be no talk of their Semitic origin. They are descendants of the Khazars – a European Germanic nation that adopted the Jewish religion. You can find more detailed information on this topic on the Internet and in literature (although this topic is often abused for embarrassing conspiracy theories at the level of 5-year-old children).
Only a person with black hair, dark eyes, and darker skin than Europeans can be considered a Semite. And that certainly cannot be said about the people who call themselves Jews.
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