Re: Israel is not the Church

Since the exchange is getting too lengthy, I'm going to offer a summary 
conclusion and address other specific points in future responses.

Conclusion:

None of the passages you cite either expressly state or necessitate the 
idea that God ever told believers to come out of the church. You cite a 
lot of references from the epistles, but none of them support confusing 
Israel and the world system during the Tribulation, with the church in 
the church era.

Church-era believers are the ones who do NOT come out of the church:

      “Children, it is the last hour, and as you have heard that
       antichrist is coming, so now many antichrists have come.
       Therefore we know that it is the last hour. They went out from
       us, but they were not of us; for if they had been of us, they
       would have continued with us. But they went out, that it might
       become plain that they all are not of us.” (1 John 2:18–19, ESV)

It is the antichrists who go out from the church, not the believers.