I am curious why the OP mentions chapter 8 and chapter 9 in this thinking
if we look at romans, we see the first 8 chapters are pat of what many call the roman road
in these chapters paul tells us that we have all sinned, in other words, no one gets a free ride, because all have sinned,
he tells us the wage of sin (death) concluding that we are all dead before God, there is non righteous no not one
He then tells us the price of salvation. and the love of God, in that he sent his own son to die the death (the wage of sin) so we may be given the gift of life.
He tells us it is not by works. It never has been by works. But through faith. He uses abraham as an example. Abraham who did not earn his salvation by works, as the jew wanted us to believe, but that he, before the law, was found righteous because of his faith in God. And because of it, God imputed his righteousness to Abraham, so when Gd saw abraham, he did not see abrahams sin, he saw his sons righteousness. What the law would later show as a covering by the blood of the lamb. And that those of us today are saved by the faith of abraham, which was Gods will all along
He tells us this covering, or redemption comes to us for free. His justification comes through the redemption which is through the work of Christ, or his death.
he then tells us the result of this salvation. That b cause we were saved by Gods grace abd Gods work. We have peace through God, we are no longer condemned, and we have security, that nothing can seperate us from Gods love
so we have the why, the how and the result of Gods work.
then in romans 9 through 11, paul seems to switch to a different type. To answer the question. Has God made a mistake? The very people that God chose. Who he gave the adoption. They have the glory,. The covenants. The giving of the law. The service of god. They city. And the temple. These same people who crucified his son, who rejects his grace, who are his and pauls enemy concerning the gospel. Who claim God chose them because of the righteousness of the fathers. That God chose them because they were not gentile. That gentiles are outcasts and will never be given Gods glory. That they are sinners and judged rightly undeserving. Paul goes step by step showing the roman church God did not make a mistake. He did not chose them according to Mans way. But according to Gods way. He did not chose them because they were righteous. He chose them before they were even born, in the womb, that he did have a special love t=for them as his people who were called out, so he loved them more, while he loved his brother less (esau) that f we look at history. God spent centuries tries to mold them into his glory. And when they went away from him, or became soiled. He would start over, as the potter molds the clay, sp to will he, That how God raised up a gentile king. Knowing in his omniscience exactly how that king would react to show the world his power. he showed how the OT not only prophesied that a people who were not his would become his. How israel would fall. And how the gentiles would be given a time to do what Israel was supposed to do. But that just as Israel fell. So would these gentiles. And in the end. God will keep his prMoses to his chosen. Not for the sake of the people. But for the sake of the father, and the promises he made to them/ That God keeps his promises. Not only to Israel. But to everyone who is adopted, we can be assured that God will never let us go. Because when God makes a promise he keeps it. No matter what we do.
then in chapter 12/ he appears to continue from where he left of in chapter 9,, therefore sin these things….