It was prophesied that GOD would make a new covenant with the house of Israel and the house of Judah, and that covenant was made at the last supper with 11 men who were of the house of Israel. They were the nation of Israel's representatives.
this covent with Israel is in the future
24For I will take you from among the heathen, and gather you out of all countries,
and will bring you into your own land.25Then will I sprinkle clean water upon you,
and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you.
26A new heart also will I give you, and a new spirit will I put within you: and I will
take away the stony heart out of your flesh, and I will give you an heart of flesh.
27And I will put my spirit within you, and [cause you to walk] in [my statutes],
and ye[ shall] keep [my judgments], and do them.
28And ye shall dwell in the land that [I gave to your fathers]; and ye shall be my people,
and I will be your God. 29I will also save you from all your uncleannesses:
and I will call for the corn, and will increase it, and lay no famine upon you.
30And I will multiply the fruit of the tree, and the increase of the field, that ye
shall receive no more reproach of famine among the heathen.
31Then shall ye remember your own evil ways, and your doings that were not good,
and [shall lothe yourselves] in your own sight for your iniquities and for your abominations.
again
43And there shall ye remember your ways, and all your doings, wherein ye have been defiled;
and ye shall [lothe yourselves] in your own sight for all your evils that ye have committed.
44And ye shall know that I am the Lord, when I have wrought with you for my name's sake,
not according to your wicked ways, nor according to your corrupt doings, O ye house of Israel,
saith the Lord God.