I must admit I don't totally get where you are coming form.
Christ is the first fruits from the dead as the scripture says, but He is not the first to actually rise from the dead as Moses and numerous others Old and new testament have been raised. however most of them saw death again. Except Elijah and Moses.
So clearly Paul is not saying that Christ is the first to physically come back to life. which I think you agree. But His resurrection is what all others are based on and contingent on wether past or future.
Either way I am not sure how you link those to John 3 please explain how they uphold the notion that no one has literally gone to heaven?
The following is your post 256:
'''We believe that Elijah went to heaven because that is what it says.
We believe most did not because that is what it says:
Heb 11:39 And
these(those mentioned in ch11) all, having obtained a good report through faith, received not the promise:
Heb 11:40 God having provided some better thing for us,
that they without us should not be made perfect.
while some clearly went as the scriptures say. Most await the resurrection. Even David who was a man after Gods own heart did not go yet.'''
So no one mentioned in Heb ch 11 went to heaven when they died according to your quote. These were mentioned in that chapter:
Enoch, Noah, Abraham, Isaac, Jacob, Joseph,
Moses, David, sammuel and the prophets.
Yet you say Moses did go to Heaven. You are seriously confused