[Tzfat]

Blood line had nothing to do with being part of Israel. The promise of a great nation WASN'T given to Jacob-it was given to Abraham.

Ezekiel 28:25
'Thus says the L-rd G-D, "When I gather the house of Israel from the peoples among whom they are scattered, and will manifest My holiness in them in the sight of the nations, then they will live in their land which I gave to My servant Jacob."

Isaiah 49:6
He says, "It is too small a thing that You should be My Servant to raise up the tribes of Jacob and to restore the preserved ones of Israel; I will also make You a light of the nations so that My salvation may reach to the end of the earth."

Micah 4:2
Many nations will come and say, "Come and let us go up to the mountain of the L-RD And to the house of the G-d of Jacob, That He may teach us about His ways And that we may walk in His paths." For from Zion will go forth the Torah, even the word of the L-RD from Jerusalem.

[HarleyD]

Look, we can pick and choose verses until the cows come home. Paul clearly explains in practically the entire last half of Romans (9-11) that Gentiles are grafted into the nation of Israel and that many "Israelites" do not belong to Abraham. The whole purpose of Romans 9 is to tell Gentiles they are part of the Abrahamic covenant.

Rom 9:6 Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:

Rom 9:7 Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called. Rom 9:8 That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.

Rom 9:9 For this is the word of promise, At this time will I come, and Sara shall have a son.

And Romans 11 goes even further:

Rom 11:7 What then? Israel hath not obtained that which he seeketh for; but the election hath obtained it, and the rest were blinded

Rom 11:19 Thou wilt say then, The branches were broken off, that I might be graffed in.

Rom 11:20 Well; because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear:

The Jews are blinded because of their unbelief. We are graffed in.

Rom 10:19 But I ask, did Israel not understand? First Moses says, "I will make you jealous of those who are not a nation; with a foolish nation I will make you angry."

We are that "foolish" nation.

Honestly, I don't know how much clearer it has to be. Some simply want to throw out Romans 9-11 or ignore it. I wouldn't recommend it.