“Yet now Christ has been roused from among the dead, the Firstfruit of those who have fallen asleep (1 Corinthians 15:20-22)
The body of Adam was the prototype for humanity in its present mortal condition.
“The LORD God formed the human out of soil from the ground, and He blew into his nostrils the breath of life; and the human became a living soul." (Genesis 2:7)
Adam's body was made “out of soil”. When the LORD God added the “breath of life” to that body, Adam became the first man who was a living soul of “flesh and blood”.
However, this MORTAL prototype “is not able to enjoy an allotment in the Kingdom of God”.
"The first man was out of the earth, made of soil...Now this I am averring, brethren, that flesh and blood is not able to enjoy an allotment in the Kingdom of God." (1 Corinthians 15:47, 50)
All humans have bodies like Adam. It is mortal, eventually dies and returns to the soil of which it is made, and the soul sleeps. However, that sleeping soul has been promised a new body. That body will be a“spiritual” and immortal "new creation". We will have been born again to enter the Kingdom of God!
"Jesus answered, "Verily, verily, I am saying to you, If anyone should not be begotten of water and of spirit, he cannot be entering into the kingdom of God. That which is begotten by the flesh is flesh, and that which is begotten by the spirit is spirit." (John 3:5-6)
"Thus also is the resurrection of the dead. It is sown in corruption; it is roused in incorruption. It is sown in dishonor; it is roused in glory. It is sown in infirmity; it is roused in power; It is sown a soulish body, it is roused a spiritual body. If there is a soulish body, there is a spiritual also. Thus it is written also, the first man, Adam, became a living soul; the last Adam a vivifying Spirit. But not first the spiritual, but the soulish, thereupon the spiritual. The first man was out of the earth, soilish; the second Man is the Lord out of heaven...And according as we wear the image of the soils, we shall be wearing the image of the Heavenly.” (1 Corinthians 15:42-49)
"For our realm is inherent in the heavens, out of which we are awaiting a Savior also, the Lord, Jesus Christ, Who will transfigure the body of our humiliation, to conform it to the body of His glory." (Philippians 3:20-21)
"For if we have become planted together in the likeness of His death, nevertheless we shall be of the resurrection also." (Romans 6:4)
“So that, if anyone is in Christ, there is a new creation: the primitive passed by. Lo! there has come new!" (2 Corinthians 5:17)
This born again spiritual, immortal, and sinless living soul will “enjoy an allotment in the Kingdom of God”.
Again, the mortal human cannot “perceive” or be “entering” the Kingdom of God. The mortal will be born again - as an immortal. When our mother's water broke, we were born the first time of "water" as we came into this world in humiliation. At our resurrection from death, we will be born again "of spirit".
"Now this I am averring, brethren, that flesh and blood is not able to enjoy an allotment in the Kingdom of God...Lo! I secret to you am I telling!...we all shall be changed, in an instant, in the twinkle of an eye, at the last trump... For this corruptible must put on incorruption and this mortal put on immortality." (1 Corinthians 15: 50-53)
We now have a mortal body like the prototypes Adam and the man Jesus. After God is through with us we will have an immortal body like the risen prototype Christ Jesus. Humanity will not only be living souls, but life giving spirits!