Paul uses this question to teach the Corinthians. It can be stated in active form. Alternate translation: "Otherwise it would be useless for Christians to receive baptism for the dead." (See: [[rc://en/ta/man/translate/figs-rquestion]] and [[rc://en/ta/man/translate/figs-activepassive]])
Paul uses this question to argue that the dead are raised. Apparently some people, probably some members of the church in Corinth, were being baptized for the dead. Paul infers that those people did so because they believed that the dead would be raised. (See: [[rc://en/ta/man/translate/figs-hypo]])
This can be translated in active form. Alternate translation: "If God does not raise the dead at all" (See: [[rc://en/ta/man/translate/figs-activepassive]])
Paul uses this question to teach the Corinthians. It can be stated in active form. Alternate translation: "there would be no reason for them to have people baptize them on behalf of dead people." (See: [[rc://en/ta/man/translate/figs-rquestion]] and [[rc://en/ta/man/translate/figs-activepassive]])