You don't even bother giving an interpretation of Romans 9:6-8 at all, so how can anyone take you seriously?
What are you talking about?
Do you have any idea as to what you were intending to say here? I certainly don't.
Obviously you missed the interpretation:
Those of Israel were literally removed from being of Israel both physically and spiritually.
You would no longer be a part of the church if God removed you from the church, and sent you to the LOF just because, for instance, you were an Amil, and God saw that as being like the Scribes and Pharisees.
You would have been of the church, but no longer the church, even if you convinced every soul in the LOF to call you a redeemed Christian.
For they are not all the church, which are of the church. They are in the LOF because God cut them off and discarded them into the LOF. That is how God viewd 21st century church members.
That would be what Paul would write if he lived today. Paul even said in chapter 11, that one cannot be secure in just the fact they were a wild branch grafted in. They could be cut off just the same as a natural branch.
You interpret it as Paul saying now we have a bunch of redeemed Gentiles who are Israel, but not of Israel.
"Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel: Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called. 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."
Your interpretation cannot work, because you missed the point Paul made in verse 3, just like Moses attempted on mount Sinai.
"For I could wish that myself were accursed from Christ for my brethren, my kinsmen according to the flesh:"
Paul was pointing out that many had been cut off from being Israel, the same theme as the branch removed.
The same with the point about Abraham's seed. Of course they were all Abraham's children. Yet Paul was saying Ishmael was not Abraham's child. He was not making a literal statement, but showing that God chose Isaac over Ishmael. Paul was showing God's choices; not physical offspring from Abraham. Ishmael was literally a son of Abraham just like Isaac, but not from God's perspective. Paul was saying from God's perspective not all of Israel can still claim the title. They have been cut off, just like Ishmael was cut off, and Isaac remained a son of Abraham.
I later pointed out, in another post, that God chose Jacob over Esua, Israel over Edom.
"And not only this; but when Rebecca also had conceived by one, even by our father Isaac; (For the children being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calleth; )
It was said unto her, The elder shall serve the younger. As it is written, Jacob have I loved, but Esau have I hated. What shall we say then? Is there unrighteousness with God? God forbid. For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion. So then it is not of him that willeth, nor of him that runneth, but of God that sheweth mercy."
You use this chapter to claim your rights as a spiritual Israel, but Paul said not to take that route, because it makes God look unrighteous.
"Is there unrighteousness with God? God forbid."
Paul was not talking about adding to Israel. Paul was talking about removing those from Israel, by His Sovereign Will, just like He removed Ishmael and Esau. Paul said it was prior to their birth that God arranged His perspective:
"For the children being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calleth."
Paul never claimed they would never be able to repent and be redeemed by the blood of Christ. They were still part of the election, until they themselves chose not to be redeemed, and rejected the Atonement. Paul was only pointing out that God was picking and choosing through the generations who would be the forefather of Jesus.
The children of God were not to be confused with the children of the flesh at no time in human history. Seems like calling yourself an Israelite is only making yourself a title of the flesh. In fact you can still convert into the Law of Moses and be a bonified Israelite.
God could still cast you out of the physical and spiritual family, because that is what Paul was writing about.
"Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth. Thou wilt say then unto me, Why doth he yet find fault? For who hath resisted his will? Nay but, O man, who art thou that repliest against God? Shall the thing formed say to him that formed it, Why hast thou made me thus? Hath not the potter power over the clay, of the same lump to make one vessel unto honour, and another unto dishonour? What if God, willing to shew his wrath, and to make his power known, endured with much longsuffering the vessels of wrath fitted to destruction: And that he might make known the riches of his glory on the vessels of mercy, which he had afore prepared unto glory, Even us, whom he hath called, not of the Jews only, but also of the Gentiles?"
Paul is declaring that God has all the rights, and that humans literally have no rights at all. That is why many are no longer of Israel. They never had the right even as a physical born Israelite. But we don't become Israelites, we skip the middleman, and become directly sons of God. Even Israelites have to become sons of God, even though God chose Abraham, Isaac, and Jacob over the rest of humanity. God chose it that way even before they were born. God still let sin and nature get in the way: Ishmael and Esau.
So, yes, even those of the church are not all the church. Now all the sons of God are the sons of God, because in Christ those of the church are the sons of God, but some of the church come in and are not part of us, but in every way act like us until they lead some or many astray. But only through Christ are we the actual seeds of the family of God, not through the title church.
I would still point out that in the symbolism of the olive tree, that is not Israel. That some of Israel is no longer Israel like Paul pointed out, as cut off. The olive tree is Christ. Israel was the natural branches, and literally many died and withered away. Some were literally cut off before death. Paul was saying that God did not allow the Gentiles to be natural branches by His Sovereign Will, although after the Cross, God was willing to graft them in and view them as equal with the branches. Nor does that rule out they could have always been grafted in, but God was longsuffering with thousands of years of wild trees nearly snuffing out the only good olive tree, before humans could grasp the full intent of even what it meant to be of Israel, much less of Christ. There were many Gentiles grafted into the olive tree in the OT. The Law of Moses allowed and even encouraged the adoption of Gentiles. Unfortunately like some of the church, Israel was even more like the world, and a lousy example of the power of God.