It's not just about the Jews, nor did I say it was. I said a few verses that are commonly thought to refer to the reader, are actually referring to saints in the past, in order to encourage the reader. It is however, Paul's explanation of how God worked out the plan of salvation. It's not a deterministic formula about how God picks people for salvation, it's actually just the opposite, it's explaining how God is opening salvation to all who enter through faith. If you have a question about what a passage is about, Paul usually sums it up for you, and this is how he sums up Romans 9;
30 What then shall we say?
That the Gentiles, who did not pursue righteousness, have obtained it, a righteousness that is by faith; but the people of Israel, who pursued the law as the way of righteousness,:have not attained their goal. 32 Why not? Because they pursued it not by faith but as if it were by works. Paul does not say : in summary some of you are chosen for salvation and some for damnation... Sucks to be you.