You simply deny what Paul writes - and how can anyone argue with that?The reason Pharoah is mentioned is not because Paul is arguing for any kind of relationship between Pharoah and the redemption of Israel but the reason is spelled out for you in the introduction to Pharoah and the conclusion to Pharoah:
15 For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion.
16 So then it is not of him that willeth, nor of him that runneth, but of God that sheweth mercy.
17
18 Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth.
Pharoah is placed in the midst of Paul's argument proving that God sovereignly chooses on whom he will have mercy and whom he hardeneth. HE IS NOT TRYING TO PROVE ANY OTHER POINT. Pharoah is inserted as example of one that God sovereignly chooses to harden rather than have mercy upon. Just look at verses 15-16 and the "therefore" in verse 18 and if you cannot see that you cannot see anything - period!!
Here is what Paul actually writes about Pharoah:
For the Scripture says to Pharaoh, "FOR THIS VERY PURPOSE I RAISED YOU UP, TO DEMONSTRATE MY POWER IN YOU, AND THAT MY NAME MIGHT BE PROCLAIMED THROUGHOUT THE WHOLE EARTH."
As you have already been shown, Paul is quoting from this text:
And (K)the LORD hardened Pharaoh's heart, and he did not listen to them, just as the LORD had spoken to Moses.
13Then the LORD said to Moses, "(L)Rise up early in the morning and stand before Pharaoh and say to him, 'Thus says the LORD, the God of the Hebrews, "(M)Let My people go, that they may serve Me.
14"For this time I will send all My plagues on you and your servants and your people, so that (N)you may know that there is no one like Me in all the earth. 15"For if by now I had put forth My hand and struck you and your people with pestilence, you would then have been cut off from the earth. 16"But, indeed, (O)for this reason I have allowed you to remain, in order to show you My power and in order to proclaim My name through all the earth.
And we all know how God "showed His power" to the world - He delivered the Jews through the Exodus.
You are engaging in a strange kind of exegesis. Paul tells us why Pharoah was hardened by sending us back to the well-known story of God's redemption of Israel from slavery in Egypt.
To suggest that Paul is not saying that Pharoah in order to reveal the power of God in delivering Israel is to both deny Paul's clear allusion and to deny one of the most central elements of Jewish tradition - the exodus.
Whereever Paul is going in the overall argument in which the Pharaoh account is provided is one thing.
But the readers are not fools! (or I hope they are not). Within the specific context of the Pharoah example, Pharaoh was not hardened to send him to hell (even if he did end up there).
He was hardened so that God could deliver the Jews out his hand, and thereby demonstrate God's power to the world.
The text says what it says, Dr. W.
Now, I agree that Paul is not ultimately making an argument about the deliverance of national Israel in Romans 9. But you have to take Paul at his word and not decide that you know better - he tells us why Pharoah was hardened.
Why do you not believe him?