2. Those outside of Israel could become a part of Israel.[/QUOTE
This is true.. but what ALSO needs to be remembered is that all could come in.. and
none were hindered from coming.
3. (1)The Atonement was for the Descendants of Abraham through the promised line, but in the NT was for the Spiritual descendants of Abraham only. (2)So Old is physical and New is spiritual which was a hard part for the apostles to grasp at first, namely Peter until his vision. He saw the atonement by Christ as being made for Israel only, but it was for many people of many different nations. This is why they began preaching to the Gentiles because God was saving them.
Ok.. I will deal with the above but in order to make what I'm doing flow better than than chopping up your above.. I placed (?) these in bold to relate to what portion I am addressing.
(1). No.. the Atonement was NOT made only for the descendants of Abraham.. otherwise all those who came into Israel (not being Abraham's descendants) were not covered under the SoA and nor would it extend through Christs death toward the world either (no matter which theological view one holds to regarding whom it was made for). The Law had to be fulfilled and thus it had to extend beyond just Abraham's natural seed.
The SoA was made on behalf of all Israel (believers and unbelievers alike), and in the NT Christ not only fulfilled the Law for the Atonement to be valid but extended it to the Gentile Nations.. thus making it so no one has to be a Jew or of the Jewish faith in order for the salvation of God to be toward them.
(2) You keep trying to divide physical and spiritual. The OLD wasn't physical and NEW spiritual as if they are at odd with one another. The NEW explains the OLD were the OLD had not yet revealed certain truths. However the Atonement was revealed, understood, and established. It was the physical act with spiritual consequences.
Also, God didn't tell Peter the Atonement was for many people of many Nations.

It was for all people of the many nations to those who believed. And I agree that is why they went to the Gentiles because God was indeed saving them.
4. The main point is that the Atonement was ultimately made for those who were a part of Israel (in the Old Covenant), and not the whole world meaning all nations (in the Old Covenant), unless they became a part of Israel (which I am foggy on how that was done). Whether there were believers or unbelievers in Israel was not the focal point, but it is the focal point in the spiritual realm of the New Testament because that is who the atonement was made for. This is why the children of God can be of every tribe, tongue, and nation by entering in Christ's body through faith.
No.. in the above you are fogging scripture with a theological view. That is why you are having such a hard time understanding what I am trying to show.
Scripture states emphatically that there is two focal points of the atonement.
1. it is made for all - believer and non alike without partiality
2. it's purpose was to have a specific effect on those who receive it/believe
Look.. you state that Christ fulfilled the Law even in the atonement.. and then turn around and state that He didn't fulfill the Law in accordance to the Law cause that is not what Christ came to do.
You can not have "A" + "Non-A" = "A"
Either Christ was obedient to the Law and fulfilled it through doing all that was required, which includes being made for believers and nonbelievers alike, or Christ didn't fulfill the Law regarding the Sacrifice of Atonement but instead only died for some. That is the crux of the issue.
Christ died for all of Israel but and in so doing extended it to all nations and not just Israel. And as such in dieing for all in the one nation also died for all in every nation. Thus Christ extended the umbrella of who would be God vehicles for His will, work and purpose.. from one nation to all, obtaining for Himself a people out of them. This is the intent of Johns writing in 1 John.. being that He was not the propitiation for our sins only (the Jewish nation/people) but for the sins of the whole world (Gentile nations/peoples).
I must reinstate to clarify my view. The Old Testament was a physical sign of atonement and a shadow of the atonement to come. It was not able to save. It was made for Israel including all who entered Israel, and included atonement for believers and unbelievers at the time.
It was a shadow, but a shadow represents the truth it is depicting. You state in the OT the Atonement was for all.. believers and non-alike. The shadow according to scripture is not what it does, for whom it was made, and why.. the shadow was of Christ Jesus. All the rest are specifics of what it is about and does, but the shadow was fortelling of who was to come - The promised Messaiah, the One and final Lamb, ect...
The New Testament atonement is for the church only. The church meaning spiritually reborn into Christ. The church includes all believers from all the world. It does not apply to unbelievers just as it didn't to other nations in the Old Covenant.
You have not proved this in any manner. I can show and have shown that the Atonement Christ made in the NT is made on behalf of all mankind. I can show how it consistently flows from the OT and continues unchanged in the NT in purpose, function, and application. It does not change one aspect in relation to the church in this knowledge but I do see where it will affect and change one theological perspective.
Believers are the spiritual nation of Israel and will be apart of the new Jerusalem. The huge key in my view is that the nation of Israel was physical and the church is spiritual (I wanted to clarify this).
The nation is Israel was also spiritual just as it was physical. If it was not spiritual also how could any OT saint be noted in the Halls of Faith?
And so just like Israel the church is spiritual AND it is physical too.
Again, are all members in your church body saved?
Are all members of all NT churches (referring more to a theological view) saved?
Answer: No (without question at least to the last one

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Please explain where I don't quite catch your point, again it is possible I'm missing your thrust
Hope that helps, probably wont, but hope it helps you understand where I am coming from.. that really is most important for now, anything is an act of God (toward you or me

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