It is interesting that they believed that death meant the end but with god being spirit I can't really see what he needs with our physical bodies. Jesus says to be reborn of spirit.
John 3
5 Jesus answered, Very truly I tell you, no one can enter the kingdom of God unless they are born of water and the Spirit. 6 Flesh gives birth to flesh, but the Spirit gives birth to spirit. 7 You should not be surprised at my saying, You must be born again. 8 The wind blows wherever it pleases. You hear its sound, but you cannot tell where it comes from or where it is going. So it is with everyone born of the Spirit.
In Scripture there are two [2] hopes held out.
All who died before Jesus died will have an earthly resurrection [John 3 v 13]
Resurrected back to life on a paradisaic earth during Jesus 1000 year reign over earth.
Those going to heaven [Jesus spiritual 'brothers'] have a spirit resurrection as Jesus did. They are part of the first or earlier resurrection mentioned at Rev. 20 v 6. [1st Cor. 15 v 50]
For our day, or time frame, is the coming 'time of separation' [Matt. 25 vs 31,32]. Those living 'sheep'-like people are alive on earth and can continue to remain alive on earth right into the start of Jesus millennial reign over earth.
So, unlike the already dead, if we are still alive on earth at the 'time of separation' [harvest time between wheat and weeds/tares] we can continue to remain alive with the prospect of gaining everlasting life on a paradisaic earth forever. -Psalm 37 vs 11,29