In my quick search I did not see the 2Kings references. Thanks. So would you agree that because of the dominance of the tribe of Judah after the division, that the word Jew slowly started applying to all the individuals living in the region of Judea? And since the tribe of Benjamin was closely connected to Judah, the word Jew started applying to them as well (so too with the Levites there in Jerusalem)? And since we are told the tribes of Judah, Benjamin and Levi went and rebuilt the temple (Ezra 1), the word Jew stuck for the people group. Therefore, by the time of Jesus, the word Jew came to be in association with all individuals who upheld the dictates of the Law and the prophecies of the Prophets.
So would you agree by the time of Jesus we have three distinct groups: Jews, Samaritans, and Gentiles?