Can you provide scripture?
The epistle to the ephesians is a good reference. We are seated in heavenly places with Christ. This is where we will reign with Christ. We are his body, He is our Head.
1 Thess 4:17 - states that we will be with the Lord in the air for ever. -
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 <--- do a phrase search on "so shall" and you will see what I mean.
1 Cor 6:3 states that we will be judging angels
Not sure I see Israel as any different than the Gentile nations, we are one, there is no difference.
In this dispensation of Grace their is no difference in Jew or Gentile. But that was not always so. Before Paul, there absolutely was. Through Israel's fall, salvation was brought unto the gentiles. But when the fullness of the gentiles come in, God's focus will once again return to Israel resuming and finishing his work with them as stated in Roms 11.
Correct, Israel is a church called the little flock The body of Christ is a church called, the body of Christ. 2 Churches for 2 different reasons. Both the heavens(Job 15:15) and the earth are unclean. Israel will labour with God in reconciling the earth to himself(Which is what most of the bible talks about). The body of Christ will labour with God in reconciling the heavenlies unto himself(Romans - Philemon).
Roms 8:19-21
For the earnest expectation of the creature waiteth for the manifestation of the sons of God. For the creature was made subject to vanity, not willingly, but by reason of him who hath subjected the same in hope, Because the creature itself also shall be delivered from the bondage of corruption into the glorious liberty of the children of God