When you plant something, it isn't a completely grown plant that you put in the ground. You only plant a seed. Maybe it's wheat or something else.
But God gives the seed a body just as he has planned. And to each kind of seed he gives its own body.
All earthly creatures are not the same. People have one kind of body. Animals have another. Birds have another kind. Fish have still another.
There are also heavenly bodies as well as earthly bodies. Heavenly bodies have one kind of glory. Earthly bodies have another.
The sun has one kind of glory. The moon has another kind. The stars have still another. And one star's glory is different from that of another star.
It will be like that with bodies that are raised from the dead. The body that is planted does not last forever. The body that is raised from the dead lasts forever.
It is planted without honor. But it is raised in glory. It is planted in weakness. But it is raised in power.
It is planted as an earthly body. But it is raised as a spiritual body. Just as there is an earthly body, there is also a spiritual body.
It is written, "The first man Adam became a living person."(Genesis 2:7) The last Adam became a spirit that gives life.
What is spiritual did not come first. What is earthly came first. What is spiritual came after that.
The first man came from the dust of the earth. The second man came from heaven.