I was summarizing verses 27-31, not just 29. I was trying to present the passage as a contextual whole
Let me step back and try again. ....
Thank you for taking the time to explain your understanding. I appreciate and agree with the desire to present the passage as a contextual whole and I enjoyed reading many of your references and observations throughout the chapter.
Even so, I asked a narrow question regarding v. 29 in an attempt to arrest our minds to acknowledge the assumption we make that leads to the abundance of theories about what Paul meant in his first question of that verse. We assume that Paul failed to explicitly identify the people he was referring to. Is that assumption warranted? I don’t think so.
We may find some theories that attempt explanation of whom Paul refers to, but can we find a commentary that answers Paul’s question
before they tell us what Paul meant? I think it is important to notice that he asked a question, rather than made a statement. If we do not answer his first question in v. 29, then how can we assert that we know what his point was for asking the question? As it stands, there are plenty of theories about v. 29, because we assume we are free to (or even must) speculate exactly who Paul refers to in his use of the pronoun “they.”
I believe the exact place where we find the referent for “they” is not hidden, except that it is hidden behind our assumption that Paul did not supply the referent. (That assumption proves to be a very secure hiding place!).
Compare the two questions that Paul asks as introductions to his two lines of argument. The earlier question beginning in v. 12 supplies all the referents needed for the question in v. 29. The referents in v. 12 make v. 29 clear and unambiguous.
1) how say some among you that there is no resurrection of the dead? But if there be no resurrection of the dead, then is Christ not risen (v. 12)
2)…what shall they do which are baptized for the dead, if the dead rise not at all? (v. 29)
1) How do they say….?
2) What shall they do…?
The two questions are in reference to the same group of people. Both questions are about those among the Corinthians who hold the premise that there is no resurrection, and by Paul’s proof, they hold that Christ is dead, even though they were baptized for Him.
The questions provide the point of departure for Paul’s two lines of reasoning which show what they say, compared to the truth, and what they do compared to what the saints do. Paul's arguments rely on the fact that a person's actions are inevitably a result of what they believe, thus he takes the occasion to remind the saints of glorious hope that will aid them to remain steadfast and unmovable.
At least that is what I am persuaded of concerning v. 29, and its relation to the rest of the chapter. Thankfully there is a lot to agree about in the rest of the chapter!
Bryan