The future order in the resurrection helps us understand what was lost when Adam and Eve sinned .We must bear in mind that what was lost had to be restored .
Adam now is represented by Christ and Eve by Christ's church of the first born : 144000 menservants.
Christ and 144000 will have the spiritual body which was misinterpreted throughout the ages . The spiritual body is a physical body made in God's way ; as God had established according to His Spirit.
The heaven now is not a place but a spiritual condition ( a state ).
Christ entered the heaven which means he got the most perfect physical body sinless and ageless for ever.The same applies to his 144000 men - the greatest christian servants.
All will be ruling on this earth ! Literally as people understand it nobody will go to heaven. As heaven is now the best spiritual state reserved for the best servants of Yahweh as given above.
God Yahweh promised after the Flood he would never destroy the earth again.2 Peter 3.5-7 is commonly misunderstood . Read carefully what heavens were destroyed in Flood ! Why heavens if the water flooded the earth only ? And what new heavens are in place ? It cannot be literal heavens ! So the fire that will destroy the new heavens doesn't have to be a literal fire as well .Even if it is a literal fire it will destroy bad people; it will be destruction of the evil heavens ,not physical heavens .
Now , we have the whole Israel consisting of many nations and it has many saved Christians :
These other saved Christians : christian men and christian women will have the same spiritual bodies as Christ and his 144000 but they will be subject to further obedience to God and His government : Christ-"God" + 144000 "gods"-men ( like prime minister and his ministers ).
They will have perfect not aging bodies , yet they will live eternally as long as they will keep obedience.They will be like workers working in for ministers . So,they will rule also over the nations of the world.
The whole Israel = Christ + 144000 + remaining saved Christians .
They will rule over the pagan nations who will consist of people who lived in false religions and were deemed good by God to have a chance to be saved in the future.
They will have physical less-perfect bodies that will age and will need renewal from time to time to go on with living in the Paradise .
Christ ( second Adam ) + 144000 men ( second Eve ) and their children who are all other saved Christians = the whole Israel .
Adam and Eve were the progenitors of the future Israel.The whole Israel would be like Adam and Eve and their children if Adam and Eve had not sinned.
Adam was the first man of possible many human beings who were created seperately in other parts of the earth and God attributed to all of them the same characteristics of Adam and Eve after they both sinned.This way sin went to all men down.That is another scenario if it it really true that other human beings were existing besides Adam and Eve which is possible.
That is why all saved pagans need to believe in Christ and yet they are outside of the family of Christ and his bride (144000 men) and their children.
In view of that the pagan people as an offspring of those other first human beings -apart from Adam and Eve- would have been living the same lives as those pagans who will be living in the Paradise with physical bodies that would have required renewals from time to time to continue their existence .
The best way is to assume there were many human beings apart from Adam and Eve that were created by God Yahweh at the very beginning but they were created after Adam and Eve were created.
Why ? Because if Adam and Eve were the only first humans and all people originated from them there would not have been the third class of saved people as I had explained. All children of Adam and Eve would have the same perfect bodies as Adam and Eve with the exclusion of the obedience principle ; they would be subject to second death (final death ) if disobedient. Adam and Eve would never sin !
And now Christ and his 144000 took that what was lost by Adam and Eve.They will never sin in the whole eternity, being as "God" and "gods".