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Covenant is a key word of Tenach, the Hebrew Bible, where it occurs more than 250 times.
My disciplin is in the Tenach, and entire Bible, and have spent the last 30 years of my life, raising support for the Nation of Israel, by teaching the Jewish scriptures in places of higher learning, and in churches: as to G-Ds unequivical future plans for the Nation.
Tenach itself is ample evidence that the mesorah was broken, plus it's quite likely that Sinai itself was a total myth.
It also says in the Tenach, that if Israel throws away the Torah law, which it has done for about 2000 years and still going on today, that Israel will be attacked, exiled, murdered and prosecuted according to their deeds, and will not have peace.