'Baptized' in the Bible

Is the Messiah divided? Paul wasn't crucified for you, was he? You weren't baptized in Paul's name, were you?

so that no one can say that you were baptized in my name.

(Oh yes, I also baptized the family of Stephanas. Beyond that, I'm not sure whether I baptized anyone else.)

For by one Spirit all of us Jews and Greeks, slaves and free were baptized into one body and were all privileged to drink from one Spirit.

Otherwise, what will those people do who are being baptized because of those who have died? If the dead are not raised at all, why are they being baptized because of them?