Jer 3:8 Then I saw that for all the causes for which backsliding Israel(house of Isra’el, 10 northern tribes) had committed adultery, I had put her away and given her a certificate of divorce; yet her treacherous sister Judah(house of Judah/Jews) did not fear, but went and played the harlot also.
Jer 11:16 The LORD called your name, Green Olive Tree, Lovely and of Good Fruit. With the noise of a great tumult He has kindled fire on it, And its branches are broken
Ez 37:16 “As for you, son of man, take a stick for yourself and write on it: ‘For Judah and for the children of Israel, his companions.’ Then take another stick and write on it, ‘For Joseph, the stick of Ephraim, and for all the house of Israel, his companions.’
Jer 31:31 “Behold, the days are coming, says the LORD, when I will make a new covenant with the house of Israel and with the house of Judah—; 32 not according to the covenant that I made with their fathers in the day that I took them by the hand to lead them out of the land of Egypt, My covenant which they broke, though I was a husband to them, says the LORD. 33 But this is the covenant that I will make with the house of Israel after those days, says the LORD: I will put My law in their minds, and write it on their hearts
No new covenant for pagan gentiles, only for the two houses of Isra'el
Rm 11:19 You will say then, “Branches were broken off that I might be grafted in.” 20 Well said. Because of unbelief they were broken off, and you stand by faith. Do not be haughty, but fear. 21 For if God did not spare the natural branches, He may not spare you either. 22 Therefore consider the goodness and severity of God: on those who fell, severity; but toward you, goodness, if you continue in His goodness. Otherwise you also will be cut off. 23 And they also, if they do not continue in unbelief, will be grafted in, for God is able to graft them in again. 24 For if you were cut out of the olive tree which is wild by nature, and were grafted contrary to nature into a cultivated olive tree, how much more will these, who are natural branches, be grafted into their own olive tree?.....29 For the gifts and the calling of God are irrevocable. 30 For as you were once disobedient to God, yet have now obtained mercy through their disobedience, 31 even so these also have now been disobedient, that through the mercy shown you they also may obtain mercy. 32 For God has committed them all to disobedience, that He might have mercy on all.
So when Paul says he was only talking to those who understand Torah and he began talking about the law of divorce; he knew exactly what he was saying and who he was saying it to, the out of covenant children of Isra’el, the branches of the Green Olive Tree, the dispersion of John 7:35. You see, YHVH never diovorced the house of Judah(Jews), and though they don't have things perfect, they have always kept Torah and have never been out of covenant. YHVH blinded the houe of Judah to the Messiah and we are to be a light for YHVH to bring the house of Judah to jealousy that they may seek Messiah. However, they are not & have never been out of covenant because He also told us that HE will lift the veil for the remaining Jews who are still blind to Messiah when HE returns.
The other reason Messiah came was to put salvation back where it belonged, in the hands of the heavenly High Priest as it had been from the beginning until the golden calf incident at Mt Sinai.
Exodus 19:6 And you shall be to Me a kingdom of priests and a holy nation. (Speaking of the Malki’Tzedek priesthood which began with Adam, replaced by the Levitical priesthood because of the golden calf incident, now returned by the blood of Messiah)
I asked you why you believe that Jesus died on the cross. Also what do you think happened to the tribes other than Judah?