'If the Dead Do Not Rise' in the Bible

For, if the dead do not rise, then even Christ himself has not been raised,

Seeing what shall they do who are baptized for the dead, if the dead do not rise at all? why also are they baptized for the dead?

if after the manner of a man with wild beasts I fought in Ephesus, what the advantage to me if the dead do not rise? let us eat and drink, for to-morrow we die!