In the resurrection people will get a new body, a spiritual body. The ascended are like angels. Angels are invisible but can also take a physical body. In Tobit’s Book (apocrypha) there is a story of angel Raphael who lived a long time with people and only before returning to heaven he revealed that he was an angel. Heb 13:2 is said of angels: Don’t forget to show hospitality to strangers, for in doing so, some have entertained angels without knowing it.
The resurrected ones are righteous, and the others who receive eternal life after the Last Judgment will be like Adam as God originally meant. Then all have been created new, both land and people. Before that, people must strive in faith here on earth.
2 Pet 1:4 by which he has granted to us his precious and exceedingly great promises; that through these you may become partakers of the divine nature, having escaped from the corruption that is in the world by lust.
2 Cor 5:17 “Therefore if anyone is in Christ, he is a new creature; the old things passed away; behold, new things have come.” – If a believer endures in his faith until the end, he is born again from above from God. He will become like Jesus.
Eph 2:19 That is why you are no longer strangers and foreigners but fellow citizens with the saints and members of God’s household,
1 Cor 15:48 Those who are made of the dust are like the man from the dust, those who are heavenly are like the man who is from heaven. 49 And as we have borne the image of the one made of dust, we shall bear also the image of the heavenly one.
Psa 17:15 As for me, I will behold thy face in righteousness; I shall be satisfied, when I awake, with thy likeness. – ‘When I awake’ means resurrection. God created man in his own image, and now that man is awakened in resurrection, he is no longer like a sinner and one that has left God. Man rises up as God created him – like an angel of God.
In the resurrection man becomes a spirit being, like Christ. Resurrection means awakening like Christ. This applies to the first resurrection of the saints. This is confirmed by John: 1 Jhn 3:2 Beloved, now we are children of God, and it is not yet revealed what we will be. But we know that, when he is revealed, we will be like him; for we will see him just as he is.