Yes, nice try Christopher. And as always in these discussions, the spin-offs are as valuable as the discussion: like the book you draw attention to.

That Israel’s disobedience was instrumental in bringing salvation to the gentiles works for me not so much because the one led to the other, as it were, chronologically, but that Israel’s disobedience was at the heart of the issue which brought down salvation for the gentiles. Israel were God’s elect means of dealing with sin; their disobedience brought the obedient Israelite, Christ, to the cross, where sins were dealt with - for Jews and Gentiles.

But how does this inclusion of the ‘full number’ of the gentiles pave the way for ‘all Israel’ to be saved? Especially as Paul in Romans 11:26 is describing a simultaneous process (gentiles included, Israel hardened - but some saved) rather than a consecutive process (gentiles included - and then ‘all Israel’ saved).

Your interpretation also means that the ‘short time’ of Satan’s resurgence is actually longer (in real time) than the ‘thousand years’ in which he is bound. (2000+ years as against 65+ years). But it points up one thing: there is no simple interpretation of this passage which is without its difficulties.