'Baptized' in the Bible

Is Christ divided? Paul wasn't crucified for you, was he? Or were you in fact baptized in the name of Paul?

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

(I also baptized the household of Stephanus. Otherwise, I do not remember whether I baptized anyone else.)

and all were baptized into Moses in the cloud and in the sea,

For in one Spirit we were all baptized into one body. Whether Jews or Greeks or slaves or free, we were all made to drink of the one Spirit.

Otherwise, what will those do who are baptized for the dead? If the dead are not raised at all, then why are they baptized for them?