Right before the Second World War (1939-45), Judaistic attitudes were well summarized by the prominent Judaists who then wrote their 1938 Jewish Encyclopaedia. Thereafter, the Judaistic State of Israel was set up in Palestine in 1948 to perpetuate those attitudes — with the strong support of Judaists elsewhere in general, and in the United States of America in particular.
The uncircumcised Adam, Abel, Seth, Enos, Enoch, Noah, Shem, Japheth, Abraham, Isaac, Jacob and Judah were not Jews. There were none anywhere, before the first sons of Judah (Er and Onan etc.). Genesis 38:2-10 & 46:12. The word "Jews" (Yehuudiym) is first encountered in the days when Rezin king of Syria in B.C. 740 "drove the Jews from Elath" (Second Kings 16:6) — and later in the books of Jeremiah, Daniel, Zechariah, Ezra, Nehemiah and Esther.