'Dead Rise' in the Bible

And we are also found false witnesses concerning God; because we testified concerning God that he raised up Christ, whom he did not raise up, if so be that the dead rise not.

For if the dead rise not, then Christ hath not risen;

If it be not so, what are they doing, who are baptized for the dead? If the dead rise not at all, why are they then baptized for them?

If with the views of men I fought with wild beasts at Ephesus, what advantage is it to me? If the dead rise not, "let us eat and drink, for tomorrow we die."