Meili-Chan

"Now if there is no ressurection,  what will "those" do who are baptized for the dead? If the dead are not raised at all, why are people baptized for them?"

Just north of Corinth was a city named Eleusis. This was the location of a pagan religion where baptism in the sea was practiced to guarantee a good afterlife. This religion was mentioned by Homer in Hymn to Demeter 478-79.

This is significant because the Christian church was not practicing baptism for the dead, but the pagans were.

Hence "those" refers to the pagan practice that believe in ressurection.  If even the pagan believe in ressurection, why are we still not convinced in ressurection?

https://carm.org/baptism-for-the-dead-in-1-corinthians-15-29

"If the dead are not raised, let us eat and drink, for tomorrow we die" 1 Cor 15:32

Live our life wisely ��