In historical messianism, the reign of the Messiah is brought about by a Jewish ruler powerful enough to gather the Jewish exiles back to the land of Israel, reestablish a Torah government there, and rebuild the Temple in Jerusalem.
If human language, with its logic, is the way God has given us to understand the world, then the Torah must be understood in that same language and with that same logic.
One cannot accept Christ and still be part of the normative Jewish community; one cannot live by Torah and still be part of the Church.