Paul never wrote such a thing. All of Romans 9-11 is about the remnant that believes, ie, the elect that receives Christ. You are simply trying to replace the elect with disobedient branches, who Paul made clear are not the elect.
"Paul never wrote such a thing."
The connection of Isaiah 59:20-21 to Romans 11:25-27 is uncontested, unequivocal and absolute.
To say otherwise is......simply not rational nor sane.
Isa 59:20 - And the Redeemer shall come to Zion, and unto them that turn from transgression in Jacob, saith the LORD.
Rom 11:26 - And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
Yes, the Apostle Paul does quote Isaiah 59:20 in Romans 11:26, though he adapts the text slightly. This is a significant moment in Paul’s argument regarding the future restoration of Israel.
Key Observations:
"To" vs. "Out of": In the original Hebrew and most English translations of Isaiah, the Redeemer comes to Zion. Paul’s Greek rendering (following some manuscripts of the Septuagint or perhaps conflating it with Psalm 14:7) says the Deliverer comes out of Zion.
Conflation with Isaiah 27:9: Paul also appears to blend the end of Isaiah 59:20 with Isaiah 27:9 ("This is the blessing from Me to them, when I take away their sins"), which is a common practice in New Testament "stringing" of Old Testament pearls (charaz).
Theological Context:
Paul uses this quote to support his "mystery" that "all Israel will be saved." By citing Isaiah, he emphasizes that the salvation of Israel is not a new idea but part of the original covenant promises made by God.