JerryS,
you think there is a contingency particle (if) in sayings about this generation will not pass until...
There is not.
I never said such a thing. Instead, I said that the word "generation" is not the correct translation in the Olivet Discourse:
"Verily I say unto you, This generation shall not pass away, till all be fulfilled. Heaven and earth shall pass away: but my words shall not pass away. And take heed to yourselves, lest at any time your hearts be overcharged with surfeiting, and drunkenness, and cares of this life, and so that day come upon you unawares. For as a snare shall it come on all them that dwell on the face of the whole earth" (Lk.21:32-35).
No first century "generation" saw a world wide judgment upon the earth.
Eph 1 says the blessing of forgiveness of sins is very spiritual, and says that all who believe, Jew or gentile, share in the promise to Israel.
Where do we read that in the first chapter of Ephesians?
1, Rom 11 is prodding not prediction.
It teaches us something valuable.
In the end of the tenth chapter of Romans and the beginning of the eleventh chapter Paul states:
"But to Israel He saith, All day long I have stretched forth my hands unto a disobedient and gainsaying people. I say then, Hath God cast away his people? God forbid" (Ro.10:21; 11:1).
In this passage when Paul speaks of Israel it is obvious that it is Israel which is made up of the physical descendants of Abraham, Isaac and Jacob which is in view:
"All day long I have stretched forth my hands unto a disobedient and gainsaying people."
So when Paul asked, "Hath God cast away His people" he was asking if the nation of Israel that had its beginning in the OT had been cast away, a nation that was made up of the physical descendants of Abraham, Isaac and Jacob.
And what he says next makes it plain that God has not cast away the Israel made up of the physical descendants of Abraham, Isaac and Jacob:
"God forbid."
But preterism has no place in their eschatology for a time when the nation of Israel will once again be the Lord's special people:
"For thou art an holy people unto the LORD thy God: the LORD thy God hath chosen thee to be a special people unto himself, above all people that are upon the face of the earth" (Deut.7:6).
That will happen when the house of Israel and the house of Judah will finally be a blessing to the world:
"And it shall come to pass, that as ye were a curse among the heathen, O house of Judah, and house of Israel; so will I save you, and ye shall be a blessing...In those days it shall come to pass, that ten men shall take hold out of all languages of the nations, even shall take hold of the skirt of him that is a Jew, saying, We will go with you: for we have heard that God is with you" (Zech.8:13,23).
Of course the preterist have no place for the fulfillment of this prophecy so they must do their best to spiritualize it away!