Something to consider when you return.
The Law was given to all Israel, all the twelve tribes. The Law became "Jewish" after the division of Israel in the days of Rehoboam and Jeroboam. The priesthood, the Levites, together with the Jews and Benjamite's became the "house of Judah". As the Law was now administered only to the Jews (and a few from the other tribes that remained) and because the Jewish judges, the Pharisees, were now the sole judges of the Law, the Law became "Jewish".
Meanwhile the breakaway "house of Israel", comprised of the other ten tribes set up their own worship sans the legitimate priesthood of the Levites, and eventually fell into idolatry. Conquered and removed by the Assyrians and scattered northward they eventually lost their identity and any memory of the Law and became lost to history.
Meanwhile, even as the "house of Judah" was later conquered and enslaved by the Babylonians they retained the priesthood and the Law, which was reestablished after their captivity, in the days of Ezra and Nehemiah.
This was prophetic as the 'scepter', the rulership, invested in the throne of David and the seat of Moses, which included the authority of the Levitical priesthood, was to remain with the Jews, "the house of Judah" while the 'birthright', the promise of material wealth and power, was given to Joseph, who was the preeminent figure of the breakaway "house of Israel", so-called because most of the tribes of Israel were included.