Skan- i kno this is asking a lot but can you give us a breakdown, in your eyes, what Paul is saying from verses 14-24?
Sure, if you promise to read it objectively.
14 What then shall we say? Is God unjust? Not at all!
What diatribe argument is Paul anticipating with this question? Well, looking at verse 13 its clear that the objection a reader might have would be, "Is it just for God to choose one descendant of Abraham for noble purposes (Jacob) while passing by the other to be used for common purposes (Esau)?" After all they are both Jews, shouldn't they both be chosen equally? Is that "just" for God to choose for one brother over the other?
15 For he says to Moses, "I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion."
The answer is clear. Yes, it is just. God can be merciful to whomever he pleases. Even those who are not "natural decedents" of Abraham, for if he can choose to "hate" Esau, who was clearly a natural decedent, then he can harden you, a pharisee of the law. And if he wants to show mercy even to "unclean" Gentiles, that is his prerogative. He is God! (see verses 6-8)
16 It does not, therefore, depend on man's desire or effort, but on God's mercy.
Israel is known for their desire and effort...they have been keepers of the Law for generations, but it is not dependent on that. For the righteousness that Israel has pursued through the law it has not obtained, but those who are not pursing it and did not even desire it have obtained it, yes, the Gentiles have obtained it by faith (see verses 30-31)
17 For the Scripture says to Pharaoh: "I raised you up for this very purpose, that I might display my power in you and that my name might be proclaimed in all the earth."
Pharaoh is a great example of what is happening to Israel at this time. Pharaoh, like Israel, was already rebellious. God didn't have to make him rebellious. That isn't what is meant by "hardening." But God DID blind him in his already rebellious state at times so that he would not see the OBVIOUS truth that the plagues and signs of God though Moses revealed. Why did God do this? To prevent Pharaoh from changing his mind before the right time...after the Passover. In this God's glory was made known and his story told throughout the ages.
Same is true of Israel now. They are being blinded by God (see Romans 11:1-10). They might be convinced otherwise (Acts 28; John 12 etc), but God has a purpose to fulfill in their rebellion...the real Passover and the ingrafting of the Gentiles.
18 Therefore God has mercy on whom he wants to have mercy, and he hardens whom he wants to harden.
God can show mercy to the Gentiles and harden Israel if that is what he wants to do. He also can show mercy to me, Paul, who is a Jew while he hardens the rest of you Jews in your rebellion. What is important to note here is that those being "hardened" are not necessarily going to be condemned. See Romans 11. Why is that important to note? Because if those being hardened are the non-elect reprobates as presumed by Calvinists, then how would it be possible for them to be saved later? If Paul was "Calvinistic" he would never have referred to these Hardened people as being potentially saved.
19 One of you will say to me: "Then why does God still blame us? For who resists his will?" Again, Paul uses diatribe to anticipate the question of those reading. Is Paul anticipating the objection of an "Arminian" thinker wondering why God has blinded all men from birth and only opened the eyes of an elect few leaving the rest to certain condemnation? NO! Because that is NOT what is happening.
Clearly, the objection Paul is anticipating is from a Jew who is being temporarily blinded by God. A hardened Jew would ask, "Why does God blame me? He blinded me in my rebellious state and who can overcome God?" THAT IS THE OBJECTION PAUL IS ANSWERING HERE. As you keep that in mind read his reply:
20 But who are you, O man, to talk back to God? "Shall what is formed say to him who formed it, 'Why did you make me like this?' "
God has held out his hands to this rebellious and obstinate people all day (Rm 10:21); he has been patient with them for decades, so now for him to blind them in that already rebellious state from the obvious truth so as to accomplish redemption for the whole world is perfectly just. You made your bed, now lie in it!
21 Does not the potter have the right to make out of the same lump of clay some pottery for noble purposes and some for common use?
Who is the lump of clay Paul is talking about here? ISRAEL. Out of that lump he is using some for noble purposes. Who would that be? The Remnant. Paul is a Jew and he is being used for a noble purpose. The Remnant of Israel are those chosen from Israel to take the message of redemption to the whole world. Paul is one of those people. The rest of the lump are being blinded in their rebellion -- "common use." Does this mean these hardened Jews will be certainly condemned to hell? Paul anticipates that exact question in his diatribe over in Romans 11:11 and following. Read it and tell me what you think.
22 What if God, choosing to show his wrath and make his power known, bore with great patience the objects of his wrath--prepared for destruction?
What group of people has God "bore with great patience" over all these years? Same answer as above. ISRAEL! They are fitted for destruction because of their continued rebellion. In other words, WHAT IF GOD PUT UP WITH THE JEWS, DESPITE THEIR CONTINUED REBELLION AND DESPITE THE FACT THEY WERE FIT FOR WRATH AND DESTRUCTION. WHY?
23 What if he did this to make the riches of his glory known to the objects of his mercy, whom he prepared in advance for glory-- 24 even us, whom he also called, not only from the Jews but also from the Gentiles?
What if he put up with Israel this long to make his glory and mercy known to those now being saved. Who would that be? The Gentiles, who he has been preparing for salvation all along. They are the people being grafted into the vine. This has always been God's plan to save the Gentiles too. But, not just Gentiles are being saved, "even us"... some of us Jews, the remnant who were reserved from the Hardening process, so as to be called to the "noble purpose" of bringing the gospel to the Gentiles.
Keep in mind that, the remnant, like Paul, were uniquely called as apostles. The Gentiles believed through their message. Paul's Apostolic authority was based upon the uniqueness of his effectual call. And even non-Calvinists affirm the effectualness of the messenger's calling. But, understand, that proof that Jonah was effectually called to preach to Ninevah is not proof that those who believed his message were effectually/irresistibly draw to faith.
Please understand that even non-Calvinists affirm that God works effectually in the lives of his prophets, messengers, apostles, to ensure his Words are correctly delivered so that all men are "without excuse."
It is my contention that Calvinist make the mistake of applying the uniqueness of this effectual selection of the apostles and apply it to their view of soteriology. Thus, they undermine their apostolic authority and confuse the biblical revelation which causes division in the church.