I deny that the body of Christ has the same calling as those in the kingdom calling of Israel.
Since your ideas are contradicted by the Scriptures you refuse to answer what Paul said here:
"Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord" (1 Thess.4:17).
After those in the Body of Christ are caught up to meet the Lord Jesus in the air they will be with the Lord forever. So that means that those in the Body of Christ will return with Him when He returns to set up His earthly kingdom. Will you believe the Scriptures and admit that those in the Body will be with the Lord Jesus when He reigns on the earth?
Show me that you actually believe what Paul said at 1 Thess.4:17.
So you don't believe that the body of Christ began with Paul?
Here is what Paul said about that:
"Salute Andronicus and Junia, my kinsmen, and my fellowprisoners, who are of note among the apostles, who also were in Christ before me" (Ro.16:7).
The phrase " in Christ" refers to being in the Body of Christ:
"So we, being many, are one body in Christ, and every one members one of another" (Ro.12:5).
Do you believe that the twelve are no longer going to sit on twelve thrones judging the twelve tribes of Israel?
Since they are in the Body then they will be with the Lord Jesus when He returns to the earth to rule in His earthly kingdom and the Twelve will judge the Twelve Tribes and the Gentile believers in the Body will judge the rest of the world:
"Do ye not know that the saints shall judge the world?" (1 Cor.6:2).
The author is contrasting the old with the new... not that the new Jerusalem has already arrived.
Then why does he tell these Jewish believers that "ye are come unto mount Sion, and unto the city of the living God, the heavenly Jerusalem
Those who actually believe the Bible know that this is the same thing which Paul write in the following passages:
"And hath raised us up together, and made us sit together in heavenly places in Christ Jesus" (Eph.2:6).
"If ye then be risen with Christ, seek those things which are above, where Christ sitteth on the right hand of God" (Col.3:1).