Thematic Bible: Why the body dies

If Christ is in you, the body is dead because of sin, but the spirit is alive because of righteousness. But if the Spirit of him who raised up Jesus from the dead dwells in you, he who raised up Christ Jesus from the dead will also give life to your mortal bodies through his Spirit who dwells in you.

But someone will say, "How are the dead raised?" and, "With what kind of body do they come?" You foolish one, that which you yourself sow is not made alive unless it dies. That which you sow, you don't sow the body that will be, but a bare grain, maybe of wheat, or of some other kind. read more.
But God gives it a body even as it pleased him, and to each seed a body of its own.