Concerning the hardening of Pharaoh, after a note of agreement, you just assert positions opposite to mine without substantiation. So I’ll take the opportunity to share something merely anecdotal. Before publishing the book, I submitted my chapter on the hardening of Pharaoh to a distinguished Reformed scholar who is writing a major commentary on Exodus, asking for feedback. I was expecting some serious pushback or criticism of my reading. But to my surprise, the scholar largely agreed with my reading and, if anything, seems to think the divine hardening even less deterministic than I do and plans to cite my work. It is not as if it should be obvious that the divine hardening of Pharaoh was deterministic or irreversible.
Brian Abasciano, Paul’s Use of the Old Testament in Romans 9:1-9: An Intertextual and Theological Exegesis (This is Dr. Abasciano’s doctoral dissertation and the basis for his first book on Romans 9. It is essentially the same as his first book on Romans 9, but longer)