'Resurrection of the Dead' in the Bible

Now, if it is proclaimed of Christ that he has been raised from the dead, how is it that some of you say that there is no such thing as a resurrection of the dead?

But, if there is no such thing as a resurrection of the dead, then even Christ has not been raised;

For, since through a man there is death, so, too, through a man there is a resurrection of the dead.

It is the same with the resurrection of the dead. Sown a mortal body, it rises immortal; sown disfigured, it rises beautiful;