All Israel (Jews) one day in the future as prophesized by God in hundreds of Old Testament that He will never totally destroy Israel from the face of the earth.
I agree that there is a future for genetic Israel to fulfill many prophecies in the OT. I would even agree that at a certain prophetic point in time, all Israel will be saved, but I would also suggest that at this same point, all Gentiles will be saved. I take this as a part of the "now and then" aspect of prophecy, and that is another big discussion.
The epistle Paul was given to identify Israel is "Israel of God" inside Galatians 6:16, which identifies Israel (Jews) not Gentiles.
Well, I am not sure that this proposition is so obvious. There is a lot of Covenant Material in Galatians. Do you realize that many Covenant Theologians use the same passage to support that Gentiles are part of the "Israel of God?" That would be another large contextual discussion.
Gentiles have NOT replaced Israel today, the Body of Christ is NOT Israel today.
Actually, this is the older dispensational claim that all Covenant theology is "replacement theology." While some forms of Covenant Theology is "replacement theology," I doubt many in Covenant Theology would actually say that the Church has replaced Israel. That is not actually the concept they use.
Romans 9-11 explains how God has diminished and set aside Israel today for a season, or a time, until He returns His attention to save all Israel (Jews) in the book of Revelation, this is also called "Jacob's Trouble". When did anyone refer a Gentile to "Jacob's Trouble"? Never! God will never break His covenant with Israel, but will gather them again and save them from the Anti-Christ and False Prophet and Satan during Jacob's Trouble in Revelation.
While you are saying some things here that have some truth in them, what is missing is the fact that Gentiles are included in OT prophetic statements. As one example of this, lets go back to the book of Galatians.
Gal 3:7 Know therefore that they that are of faith, the same are sons of Abraham. In this passage, Gentiles are sons of Abraham by faith. Sounds much like we come under the promises of the Abrahamic Covenant. Dispensationalists seem to me to miss this point that the Abrahamic Covenant included Gentiles. In the next verse, Paul moves on to show where Gentiles are included in the promises of the Abrahamic Covenant.
Gal 3:8 And the scripture, foreseeing that God would justify the Gentiles by faith, preached the gospel beforehand unto Abraham, saying, In thee shall all the nations be blessed.
Specifically, the phrase "
In thee shall all the nations of the earth be blessed" relates to the Gentiles. This promise to the Gentiles is even called "
the gospel" in that verse.
The passage has book ends.
Gal 3:9 So then they that are of faith are blessed with the faithful Abraham.
This theme of Gentile salvation is found in other places in the OT. In the day Israel is saved, so is Assyria and Egype. Just read this passage.
Isa 19:22 And Jehovah will smite Egypt, smiting and healing; and they shall return unto Jehovah, and he will be entreated of them, and will heal them.
Isa 19:23 In that day shall there be a highway out of Egypt to Assyria, and the Assyrian shall come into Egypt, and the Egyptian into Assyria; and the Egyptians shall worship with the Assyrians.
Isa 19:24 In that day shall Israel be the third with Egypt and with Assyria, a blessing in the midst of the earth;
Isa 19:25 for that Jehovah of hosts hath blessed them, saying, Blessed be Egypt my people, and Assyria the work of my hands, and Israel mine inheritance.
Notice verse 25,
Egypt my people. The term "my people" is covenant terminology. Israel is usually called "my people." Here it is Egypt.
The bottom line is that I agree that in a certain future day, all Israel will be saved. In that same day, all Gentiles will be saved. All will be saved by faith.
I am still a work in progress and could write a lot on this subject on how I got where I am, but this is not the place.