Branch = individual. Branches = individuals. If you think branch is whole nation of Israel, what nations are other natural branches? Also notice Paul is speaking to one individual reader "you" as a branch.
Branch does not represent born again believers. That comes from the dry root, Christ the seed . Branch just represents the outward flesh of men as a general term .
Like the word Christian, all who say they are Christian, are not of Christ.The same applies to a Jew
Christian is a word when defined clearly means “residents of the City of Christ” the new heavenly Jerusalem... prepared as His eternal bride.
It’s the new name he, not men named His people who were previously called as inward born again of the Spirit of Christ, Israel or a Jew.This is in respect to the spiritual seed (one) of Christ. What is applied to a inward born again Gentile the same applies to any nation to include the Jewish nation.
God our heavenly father in respect to the name Abram, he renamed Abraham is used to typify the father of many nation........ never in respect to one, as if God was a respecter of persons .
The word Christian can be used as a Jew below.It does not exchange it or replace it. But rather it simply adds to it to describe the bride of Christ. .
Revelation 2:9 I know thy works, and tribulation, and poverty, (but thou art rich) and I know the blasphemy of them which say they are Jews, and are not, but are the synagogue of Satan.
There is no need to try and separate an Jew from a Gentile in that way. It simply causes confusion, as to how many brides, how many gospels?
Christ, the anointing Holy Spirit of God works
by faith(His) in the heart of all men without respect of flesh (.No difference)
And God, which knoweth the hearts, bare them witness,
giving them the
Holy Ghost, even
as he did unto us;And put
no difference between “us and them”, purifying their hearts
by faith. Act 15:8
Romans 3:22 Even the righteousness of God which is
by faith of Jesus Christ unto all and upon
all them that believe: for there is
no difference:
Romans 10:12 For there is
no difference between the Jew and the Greek: for the same Lord over all is rich unto all that call upon him.