To "Refresh the matter",............ The "Covenant", was made with All 13 Tribes of The Children of Yisrael, of which, at the time it was made, "Yudah", or "Judah" as it is popularly known, was/is Only One of the 13 Tribes.
After the death of Solomon, & his son Rehoboam taking the throne, the Children of Yisrael broke up in to Two Houses, being the "House of Yisrael", and the "House of Yudah"/Judah, or the "Jews".
In the majority,..... The "House of Yudah", is made up only of the tribes of YUdah/JUdah, Levi, & Benyahmin/Benjamin.
Furthermore,..... The Old Testament/Tanach,..... Absolutely Is not "Jewish", ... It's YIsraeli/Israeli,.... And Any "Jewish Spiritual Leader", that disputes that,..... Is a Satanically Inspired Liar.