Thematic Bible: Why the body dies

Now if Christ be in you, the body indeed is dead because of sin, but the spirit is life because of righteousness. And if the Spirit of him that raised up Jesus from the dead dwell in you, he that raised up Christ from the dead, will also quicken your mortal bodies by his Spirit that dwelleth in you.

But some one will say, How are the dead raised? And with what body do they come? Thou fool, that which thou sowest is not quickened except it die, And that which thou sowest, thou sowest not the body that shall be, but a bare grain, perhaps of wheat, or of any other corn: read more.
But God giveth it a body as it hath pleased him, and to each of the seeds, its own body.