but we are Israyl is we are in Messiah:
Romans 9:6-8, "However, it is not as though YHWH's plan had failed. For it is not everyone who is a descendant of Yisra’yl who belongs to Yisra’yl. Nor, just because they are his descendants, are they all Abraham's children; but: In Isaac will your seed be called. That is, it is not those who are the children of the flesh who are YHWH's children; but it is the children of the promise who are regarded as Abraham's seed."
Psalms 105:6-10, “O seed of Aḇraham His servant, Children of Ya‛aqoḇ, His chosen ones! He is יהוה our Strength; His right-rulings are in all the earth. He has remembered His covenant forever, The Word He commanded, for a thousand generations, The covenant He made with Aḇraham, And His oath to Yitsḥaq, And established it to Ya‛aqoḇ for a law, To Yisra’yl – an everlasting covenant.”
Exodus 2:23-25, “And it came to be after these many days that the sovereign of Mitsrayim died. And the children of Yisra’yl groaned because of the slavery, and they cried out. And their cry came up to the Mighty One because of the slavery. And the Mighty One heard their groaning, and the Mighty One remembered His covenant with Aḇraham, with Yitsḥaq, and with Ya‛aqoḇ. And the Mighty One looked on the children of Yisra’yl, and the Mighty One knew!”
Galatians 3:27-29, “For as many of you as were immersed into Messiah have put on Messiah. There is not Yehuḏi nor Greek, there is not slave nor free, there is not male and female, for you are all one in Messiah יהושע. And if you are of Messiah, then you are seed of Aḇraham, and heirs according to promise.”
Psalm 89:26-37, “He will call out to Me; ‘You are My Father, O YHWH! You are the Rock of My salvation!’ And I will make Him My firstborn, higher than the kings of the earth. My mercy I will keep for Him forever and My covenant will stand fast withHim. And I will establish His Seed forever, and His throne will be as the days of heaven. Should His children forsake My Law, and refuse to walk in My judgments; Should they profane My statutes, and fail to keep My commandments; Then I will punish their transgression with the rod, and their iniquity with lashes from the whip. Nevertheless, My lovingkindness I will not utterly withdraw from Him, nor will I ever betray My faithfulness. My covenant I will not break, nor will I change what has gone out of My lips. Once for all, I have vowed by My holiness, I cannot lie, and I say to David; His Seed will endure forever, and his throne will endure before Me like the sun. His throne will be established forever like the moon: the faithful witness in the sky.”
an if we are not we have no hope:
Mat 15:24, “And He answering, said, “I was not sent except to the lost sheep of the house of Yisra’yl.”
Jeremiah 31:33, "For this is the covenant that I will make with the house of Israyl: After those days, says YHWH: I will put My Law (Torah/Instructions) in their inward parts, and write it in their hearts, and I will be their Strength, and they will be My people."
Hebrews 10:16, "This is the covenant that I will make with them after those days, says YHWH: I will put My Law into their hearts, and in their minds I will write them.”
Isaiah 45:22-25, “Turn to Me and be saved, all you ends of the earth! For I am Mighty, and there is none else. I have sworn by Myself, a word has gone out of My mouth in righteousness, and shall not return, so that to Me every knee shall bow, every tongue swear. One shall say, ‘Only in יהוה do I have righteousness and strength’ – he comes to Him. And all those displeased with Him shall be put to shame. In יהוה all the seed of Yisra’yl shall be declared right and glory.”
Paul gives a good breakdown of this here:
Romans 11:11-36, “I say then, have they stumbled that they should fall? Let it not be! But by their fall deliverance has come to the gentiles, to provoke them to jealousy. And if their fall is riches for the world, and their failure riches for the gentiles, how much more their completeness! For I speak to you, the gentiles, inasmuch as I am an emissary to the gentiles, I esteem my service, if somehow I might provoke to jealousy those who are my flesh and save some of them. For if their casting away is the restoration to favour of the world, what is their acceptance but life from the dead? Now if the first-fruit is set-apart, the lump is also. And if the root is set-apart, so are the branches. And if some of the branches were broken off, and you, being a wild olive tree, have been grafted in among them, and came to share the root and fatness of the olive tree, do not boast against the branches. And if you boast, remember: you do not bear the root, but the root bears you! You shall say then, “The branches were broken off that I might be grafted in.” Good! By unbelief they were broken off, and you stand by belief. Do not be arrogant, but fear. For if Yah did not spare the natural branches, He might not spare you either. See then the kindness and sharpness of Yah: on those who fell sharpness, but toward you kindness, if you continue in His kindness, otherwise you also shall be cut off. And they also, if they do not continue in unbelief, shall be grafted in, for Yah is able to graft them in again. For if you were cut out of the olive tree which is wild by nature, and were grafted contrary to nature into a good olive tree, how much more shall these who are the natural branches, be grafted into their own olive tree? For I do not wish you to be ignorant of this secret, brothers, lest you should be wise in your own estimation, that hardening in part has come over Yisra’ĕl, until the completeness of the gentiles has come in. And so all Yisra’ĕl shall be saved, as it has been written, “The Deliverer shall come out of Tsiyon, and He shall turn away wickedness from Ya‛aqoḇ, and this is My covenant with them, when I take away their sins.” Truly, as regards the Good News they are enemies for your sake, but concerning the choice they are beloved for the sake of the fathers. For the gifts and the calling of Yah are not to be repented of. For as you also at one time disobeyed Yah, but now have obtained compassion through their disobedience, so also these have now disobeyed, that through the compassion shown you they also might obtain compassion. For Yah has shut them all up to disobedience, in order to have compassion on all. Oh, the depth of riches, and wisdom and knowledge of Yah! How unsearchable His judgments and untraceable His ways! “For who has known the mind of יהוה ? Or who has become His counsellor?” “Or who first gave to Him, and it shall be given back to him?” Because of Him, and through Him, and to Him, are all, to whom be esteem forever. Amĕn. Rom 12:1, “I call upon you, therefore, brothers, through the compassion of Yah, to present your bodies a living offering – set-apart, well-pleasing to Yah – your reasonable worship.”