IMO your huge doctrinal error is to see Israel as "they", where your "they" means "the Jews".
Israel does not equate with "the Jews".
I believe "the Jews" is synonymous with "Israel." That is not a "doctrinal error." That is common language, as well as biblical language. Paul used them synonymously in Rom 9-11 where he described the hope of the Jews, or the hope of Israel.
The mercy you speak about has been available to ALL Jews and to ALL Gentiles ever since the Deliverer came out of Zion, turning away ungodliness from Jacob, and taking away their (and our) sins.
The mercy you speak about has ALWAYS been available to ALL Jews and to EVERY Jew IF he repents of his sins and turns to faith in Christ (Romans 11:23).
I've not said otherwise. I don't know why you think this point has any relevance in what I said? Christ brought mercy that transcends the failure of the Law. Therefore, the Jews, who broke the Law, can receive mercy. To deny the Jewish People can experience a restored covenant relationship with Christ is to deny the Gospel. To say that an entire nation cannot become a Christian nation is to deny history, in which many nations have converted to Christianity. It seems that for you, only Israel cannot convert to Christianity?
But the the only group that will ever be called Israel is in Christ through faith in Christ, who is the seed promised to Abraham through whom all nations of the earth are blessed - and ever since the death and resurrection of Christ, Israel is become a catholic (universal) group made of of individual "living stones".
This constitutes a *redefinition* of the word "Israel," which is why your detractors call this belief "Replacement Theology." The term is not really necessary, because its meaning is bickered over, but the truth remains. Those who hold to your position essentially redefine "Israel" to mean something other than the Jewish Nation if they then reapply the term to the universal Church. A single ethnicity and nationality is not synonymous with a multiple ethnicity and multiple nationality. This kind of "spiritualization" of a word is thought to be in Scripture, but I don't find it to be so. I don't find the term to be used this way as a "metaphor" at all! It literally refers to the Jewish People.
There is no such thing as "National Salvation" for any nation.
I refer to "political salvation" of a nation. It happens when a nation turns to God for deliverance from its enemies. You cannot deny that this happened in OT history! It's therefore real the way I define it. It's very biblical. Read Deut 28-30.
I believe you are wrong if you believe that just because the majority of individuals in a nation claim to believe in Christ, or because a time came when Christianity was made the official religion of the Roman Empire or of nations|countries, means that "countries A-M are saved nations (nationally saved) but countries N-Z are not saved, and countries N-Z includes the country that the Jews call Israel"
Again, I'm referring to political organization and deliverance from those who wish to destroy nations. Christian countries have clearly been delivered from conquering nations. The religious element is concerned with God looking favorably upon the people as a whole, rather than judging the entire people by how committed they all are over a long stretch of time.
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The above is indeed what is implied by what you are saying regarding national salvation.
The only Israel in Christ is catholic (universal - made up of individuals from many nations, tribes and tongues) - and it includes many Jews.*
* In the days before the exile of Israel's ten Northern tribes in 725 B.C, the only Israel that existed was made up of twelve tribes, and it included the tribe of Judah.
IMO the longer you falsely equate the name "Israel" with "the Jews", and the longer you believe in the possibility of a group salvation instead of individuals in Christ making up the group of living stones in Christ which is a catholic group,
Since you show no understanding of how I use the term "political salvation" of a nation, it is senseless to continue. Get back with me when you recognize this most important point I'm making? There are *many examples* of Israel's deliverance from hostile nations in the OT record, and it occurred when there were varying degrees of spiritual commitment and repentance. For example, in the time of the judges, people crying out to the Lord for deliverance was enough for God to raise up a judge for their deliverance.
the longer you will believe in a false covenant that has never existed.
The promises God made to Abraham were *not* a "false covenant."
The promise to Abraham was always about Christ and the fact that in Him all the nations of the earth would be blessed. Through Him Abraham became the father of many nations, which was God's first promise to Abraham. The promise to Abraham was never about an ethnic group descended from the tribe of Judah, but about ONE MAN descended from the tribe of Judah, i.e Jesus.
You are completely and obviously wrong. Why did you omit God's promise to Abraham concerning the "ethnic group" Israel? God didn't just promise Christ would come from the Jewish People. He promised Abraham a *nation* of Jews!