'Dead Rise' in the Bible

Yea, and we are found false witnesses of God. For we have testified of God how that he raised up Christ, whom he raised not up, if it be so that the dead rise not up again.

For if the dead rise not again, then is Christ not risen again.

Either, else what do they which are baptised over the dead, if the dead rise not at all? Why are they then baptised over the dead?

That I have fought with beasts at Ephesus after the manner of men, what advantageth it me, if the dead rise not again? "Let us eat and drink, tomorrow we shall die."