Let's see what Paul writes about the resurrection body in 1 Corinthians 15:
"35 But someone will ask, “How are the dead raised? With what kind of body do they come?” 36 Fool! What you sow does not come to life unless it dies. 37 And as for what you sow, you do not sow the body that is to be but a bare seed, perhaps of wheat or of some other grain. 38 But God gives it a body as he has chosen and to each kind of seed its own body."
Paul says in contradiction: Yes, but the body rots in the grave, it breaks into countless pieces and is scattered, how can it be that the dead are resurrected? To this, Paul answers: It is foolishness to conclude this because the dissolution of the body after death not only does not hinder its future resurrection but must precede it for the resurrection to occur. It is the same with the burial of bodies as with wheat sowing. Just as it does not sprout, does not revive unless it first begins to rot: so the body must also rot before it revives again. Because there is such a great similarity between the resurrection of bodies and wheat grains, the resting place of the dead, the cemetery, is rightly called God's plowland. Paul answers the raised question with an analogy taken from the order of nature: The seed of a plant also has to rot so that a new plant can spring to life from it. "As he willed" - that is, as determined by the laws of nature. The analogy also indicates that the resurrection will be entirely a fact of God's infinite power and free will. The resurrection of the body is a supernatural transformation. It is not the sown wheat grain that comes forth, but new life sprouts from it. Thus, the human body also perishes, yet the resurrected body emerges. The church professes the identity of the resurrected body with the old one. However, the identity should not be seen in the total of particles. The matter of our body is constantly changing in our earthly life, yet we have the same body. The decisive factor in identity is the union of matter with the soul. Otherwise, God can preserve as much from the old body as is sufficient for the resurrected body to emerge from it like a seed. The seed is not the body, not the plant itself that needs to grow, but only a grain of some crop. So, the soulless corpse is not the same type of body as it will rise. God gives every kind of seed the growing body he wanted to give everyone at creation; similarly (see v. 42) he will resurrect every human body in the way he ordained in his divine decree.
"39 Not all flesh is alike, but there is one flesh for humans, another for animals, another for birds, and another for fish. 40 There are both heavenly bodies and earthly bodies, but the glory of the heavenly is one thing, and that of the earthly is another. 41 There is one glory of the sun and another glory of the moon and another glory of the stars; indeed, star differs from star in glory. 42 So it is with the resurrection of the dead. What is sown is perishable; what is raised is imperishable. 43 It is sown in dishonor; it is raised in glory. It is sown in weakness; it is raised in power. 44 It is sown a physical body; it is raised a spiritual body. If there is a physical body, there is also a spiritual body. 45 Thus it is written, “The first man, Adam, became a living being”; the last Adam became a life-giving spirit. 46 But it is not the spiritual that is first but the physical and then the spiritual. 47 The first man was from the earth, made of dust; the second man is from heaven. 48 As one of dust, so are those who are of the dust, and as one of heaven, so are those who are of heaven. 49 Just as we have borne the image of the one of dust, we will also bear the image of the one of heaven."
The meaning of verses 39–42 is this: Just as the earthly bodies differ from each other here, and the earthly ones from the heavenly ones (from the sun, etc.), and these are also different from each other: so at the resurrection of the dead the resurrected body will be different from what it was on earth; our body will indeed, and not another, rise transformed, and the resurrected bodies will again be different from each other. How it will transform, and how it will differ, is clear from the following.
The resurrected body is a real material body, yet it differs from the old, mortal and corruptible one. It will no longer be subject to decay, disease, death. It carries the lightness, strength, harmony of the spirit. The body is buried for decay, it rises so that it never rots again, but lasts forever. The apostle only speaks about the bodies of the saved, that's why he calls their bodies glorious. It will reflect the spirituality of the soul and the beauty of grace. The image of the risen Christ will be realized in it, it will bear the dignity of the children of God. In contrast to Adam's inheritance, we receive this heavenly inheritance from Christ.
What does the "heavenly body" mentioned here mean? The text refers to the diversity of creatures on earth and in heaven as evidence of God's infinite power. So the "heavenly bodies" are, as written there: the Sun, the Moon, and the stars, i.e., celestial bodies. Remember back to the very first chapter of the Bible: "And God said, 'Let there be lights in the vault of the sky...'" (Genesis 1:14) According to the old Jewish conception, three things were called heaven: the atmospheric sky and the starry sky, and then the spiritual sky, the dwelling place of blessed souls, God's world. So there's no question of God or angels having a body in any sense. They are pure spirits.
The apostle leaves the conclusion to the reader: there will be a difference in the glory of the individual resurrected. The resurrected body has four characteristic properties, in contrast to the buried corpse. Sensual body: a material body; spiritual body: a spiritualized body, with which God will communicate the properties of the pure spirit. The last part of verse 44 suggests that the completion of redemption, the resurrection, will glorify the human body as well, and free it from the shackles of sensuality and materiality. The apostle quotes Gen. 2,7. The Greek term emphatically expresses the sensual nature of the first man. The last Adam is the Lord Jesus, the ancestor of the new, redeemed generation, whose crucifixion is the source of all grace life (hence the life-giving spirit).
The resurrected body is called "spiritual", not as if it would turn into a spirit, but because it will be completely subordinated to the soul, free from all frailty, filth, and everlasting. The spiritual body of the elect will be similar to the body of Jesus Christ after his resurrection, which was a truly visible and tangible body, but at the same time so spiritual that it could suddenly move from place to place and could pass through other bodies as well.
Verse 45. The first man was blessed with a living soul, which God himself breathed into him; Christ's body, the second or last Adam's (47. 49. v. Rom. 5,14.) was endowed with a quickening spirit. Adam's soul or spirit had the property for his body, indeed, to become its life, but it could not maintain its life, but like all other animal bodies, it was necessary for the body to be nourished, and Adam, in his state of innocence, also had an animal body. It was different with Christ. When he had completed his work and was to be glorified, his human soul became a quickening spirit, that is, from then on (in his resurrection and thereafter) it was not only the life of the body, but the basic cause of its life and maintenance, so that his body, free from all natural necessity, depended only on the spirit, which lived from God himself, and partook of his nature.
Verse 46. The sensual, the natural always necessarily precedes the spiritual, the lower degree precedes the higher one. Therefore, the sensual religion of the old covenant necessarily preceded the new covenant religion of the spirit and truth.
Verse 47. "Earthly", therefore mortal. "The second man is from heaven". The second man is Christ. (See v. 45.) Heavenly, because in his human nature he is the only begotten son of God. Just as our ancestor, Adam, was a mortal earthly man, so is the entire human race earthly, mortal; but since we have become members of Christ's mysterious body through redemption, we are already in a certain sense heavenly here on earth, and we carry within us the seed of resurrection and heavenly life.
The first man was formed from the earth (Genesis 1:2,7), and therefore his body is earthly, related to the earth, has to feed itself and maintain itself from the earth, and shares its nature and quality. The second man, Christ, descending from heaven (John 3:13), embodied in a supernatural way in the womb of a sinless virgin, and so far his body was a real human body, as it was formed from the body and blood of the most holy virgin, but at the same time it was heavenly, since this embodiment came from God in a supernatural way. The heavenly properties of his body were already manifested before his resurrection by Christ in his birth, in his glorious transfiguration, his walking on the sea, and his body's communion under the appearance of bread. But only after his completed work were they to be fully manifested, when he was completely expelled from the earthly, and his body became heavenly. The same is true of his human soul. It was receptive to all human influences and feelings, but at the same time it was that quickening spirit. As such, it could rise above all spiritual states, and by its union with God, had the power to become the sole giver of life, the foundation of life for the body, and to take it from itself without supernatural means (Matthew 4:2); but this glorified state of his soul was only to occur permanently after his completed work, and it was then that it was fully manifested and glorified as a quickening spirit.
In our earthly life, we are like mortal Adam; in the resurrection, our bodies will be like the glorified body of the Savior. Just as the heavenly Christ was glorified in body and soul after his resurrection: so his whole spiritual generation will be glorified in body and soul after their resurrection. It should also be noted that just as the heavenly Christ often showed himself before his resurrection as a quickening spirit, who drew the body into the heavenly sphere: so it often happens here that his saints, in their union with God, become in spirit that quickening spirit, which stands high above the common spiritual states, and rules over and glorifies their bodily nature. Every true Christian can also be said to have such a spirit that animates their bodies, insofar as, when they unite with Christ in the Eucharist, the seed of the future, glorious resurrection is sown in their bodies (John 6:55. 8:11).
A completely pure, completely holy life, which provides a guarantee for the resurrection of the glorified body. If we are of one spirit with him, then he will be one body with us. He partook of our nature, let us also partake of his. As the glory of the only begotten Son of God shone forth from him during his time of humiliation, so should his image be reflected in us. We must gradually transform into the same image, from one degree of pure light to another; this is how we will become similar to his glorified body.
"50 What I am saying, brothers and sisters, is this: flesh and blood cannot inherit the kingdom of God, nor does the perishable inherit the imperishable. 51 Look, I will tell you a mystery! We will not all die, but we will all be changed, 52 in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised imperishable, and we will be changed. 53 For this perishable body must put on imperishability, and this mortal body must put on immortality. 54 When this perishable body puts on imperishability and this mortal body puts on immortality, then the saying that is written will be fulfilled: “Death has been swallowed up in victory.”"
"Flesh and blood" represents the current mortal body, which cannot inherit the kingdom of heaven, because corruption cannot be incorruptibility at the same time. The "flesh and blood" is the image of the earthly Adam. From this, we can learn that eternal happiness does not consist in sensory pleasures, and that we must die according to the sensory, animalistic life and live according to the spirit of Christ if we want to gain eternal life.
Those who are alive at Christ's coming must also undergo some transformation. They shed the mortal body and put on the new one. Since we cannot enter heaven with our mortal and perishable bodies, which God has intended for us according to our body, it is necessary for the perishable body to rise. However, all this happens suddenly, so they do not partake in the decay of death. The sound of the trumpet and the voice of the angel are traditional apocalyptic expressions for describing the approach of the judging God.
All of us: both the blessed inhabitants of heaven and the damned. Not all of us will change: only the bodies of the saved will be glorified; the body of the damned will be detestable. Precisely because not everyone bears the image of the heavenly, but that of the human Adam, therefore all will rise, but not all will be clothed in a glorious body. The wicked also rise, but not in glory, for this is only promised to the good (v. 48). The wicked rise incorruptibly, but tormented by the pains of punishment (see John 5:29. Mark 9:48.).
Immediately the judge of the world will appear. The trumpet symbolizes the call to all to appear before the judge. The concept of the last trumpet is perhaps taken by Paul from Ex. 19:16 and Matt. 24:31. (See also 1 Thess. 4:15; Rev. 11:15.) Those who are still alive at Christ's second coming, their bodies will change to eternal life without death. (See 1 Thess. 4:16.) The resurrection (or the transformation of those still alive) will take place in an instant. The thought must be completed: so that we can enter God's kingdom in body as well. (v. 50.) All the dead rise in an immortal body, and those who are still alive at that time suddenly transform gloriously (if they are found to be true Christians). The moral resurrection of the righteous after the defeat of paganism is improperly called the first resurrection (Rev. 20:1–6).