(1Co 15:35) But some man will say, How are the dead raised up? and with what body do they come?
(1Co 15:36) Thou fool, that which thou sowest is not quickened, except it die:
(1Co 15:37) And that which thou sowest, thou sowest not that body that shall be, but bare grain, it may chance of wheat, or of some other grain:
Paul illustrates the resurrection using seeds and plants. If you look at the resurrection from that perspective, you will see that the resurrection isn't about the resurrection of our earthly bodies, but it is about the raising of our soul, or our 'being", the real us, from death to life. As the bible says "I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me". We as believers "have been raised from death unto life".... this is the resurrection.
In verse 36 Paul says "that which thou sowest is not quickened except it die". At first thought it would seem as though Paul is talking about our body dying but he isn't because "the plant", which is analogous to our bodies, IS NOT SOWN, seeds are sown.
In verse 37 we are told exactly that. "That which is sown, IS NOT the body that shall be", NOR is it our earthly body. That which is sown is BARE GRAIN.... a seed. That seed is our soul or our 'being", the real us that is sown into this earthly body of corruption.
So the resurrection of the dead, it has nothing to do with raising our mortal bodies from the dead.
Only the soul will be raised up where the saints will receive a glorified body, and of our soul, spirit, and flesh, only the soul will live on forever.
The flesh will be put off, and the spirit will go back to God regardless of how the person acted on earth, and the soul shall live forever.
1Co 15:52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
1Co 15:53 For this corruptible must put on incorruption, and this mortal must put on immortality.
In the flesh dwells no good thing, and we must put off this mortal body, and have a new body that is spiritual.
The flesh cannot be done over for all sin is purged with fire, and the sin resides in the flesh.
The earth cannot be done over for it is tainted with sin, which is why the Bible says the earth shall be burned up, and all the works of it, and the heavens shall melt with fervent heat, for they are tainted with sin.
The Bible says the wicked shall go in to the lower parts of the earth, and Jesus went to conquer hell and death which he descended in to the lower parts of the earth, and Revelation 19 says death and hell shall be cast in to the lower parts of the earth so the earth shall be cast in to the lake of fire.
Angels cannot be redeemed because they are one being and when they sinned they corrupted their whole being with no way to put off the flesh.
But the saints are soul and flesh, and all sin resides in the flesh, so they can put off the flesh, which their soul can be preserved.
2Co 5:8 We are confident, I say, and willing rather to be absent from the body, and to be present with the Lord.
Rev 6:9 And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held:
Rev 6:10 And they cried with a loud voice, saying, How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth?
Rev 6:11 And white robes were given unto every one of them; and it was said unto them, that they should rest yet for a little season, until their fellowservants also and their brethren, that should be killed as they were, should be fulfilled.
When a person dies in the Lord they are with the Lord Jesus in heaven where the souls are under the altar but they appear to not have their glorified body yet.
There is no reason for them to visit the underworld for they are saved like the Old Testament saints that are risen when Jesus His blood to wash away sins.