>>508013148
Yes, he was King of Israel.
>Why should modern Christians support it?
We shouldn't because Jews come from Judah which was just one of the 12 tribes of Israel. According to their own scripture Judah had descended into idolatry, injustice, and covenant unfaithfulness. Prophets such as Isaiah, Jeremiah, and Ezekiel were sent to call the people back to God but were ignored and rejected.

However, even after these judgements had fallen onto the Jews, the prophets also spoke about a future restoration, a remnant preserved, and a renewed covenant through a coming messiah, but only after first falling into delusions with an antichrist false messiah.