As for promises and gifts to literal Israel being irrevocable 
"He came to HIS OWN and HIS OWN received Him not" John 1
"Behold your house is left unto you -desolate" Matt 23
 Acts 13
44 On the next Sabbath almost the whole city came together to hear the word of God.  45 But  when the Jews saw the multitudes, they   were filled with envy; and  contradicting and blaspheming, they  opposed  the things spoken by Paul.  46 Then  Paul and Barnabas grew  bold and  said, “It was necessary that the word  of God should be spoken to you first; but since you reject it, and judge  yourselves unworthy of everlasting life, behold, we turn to the  Gentiles
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Romans 2.
26 So if the uncircumcised man keeps the  requirements of the Law, will  not his uncircumcision be regarded as  circumcision? 27 And he who is  physically uncircumcised, if he keeps  the Law, will he not judge you who  though having the letter of the Law and circumcision are a transgressor of the Law? 28 For he is not a Jew who is one outwardly, nor is circumcision that which is outward in the flesh. 29 But he is a Jew who is one inwardly; and circumcision is that which is of the heart, by the Spirit, not by the letter; and his praise is not from men, but from God.
Romans 9
6 But it is not as though the word of God has failed. For they are not all Israel who are descended from Israel;7 nor are they all children because they are Abraham’s descendants, but: “through Isaac your descendants will be named.” 8 That is, it is not the children of the flesh who are children of God, but the children of the promise are regarded as descendants.
Romans 11
17 But if some of the branches were broken off, and you, being a wild olive, were grafted in among them and became partaker with them of the rich root of the olive tree, 18 do not be arrogant toward the branches; but if you are arrogant, remember that it is not you who supports the root, but the root supports you. 19 You will say then, “Branches were broken off so that I might be grafted in.” 20 Quite right, they were broken off for their unbelief, but you stand by your faith. Do not be conceited, but fear; 21 for if God did not spare the natural branches, He will not spare you, either.   22 Behold then the kindness and severity of God; to those who fell,   severity, but to you, God’s kindness, if you continue in His kindness;   otherwise you also will be cut off. 23 And they also, if they do not   continue in their unbelief, will be grafted in, for God is able to graft them in again.   24 For if you were cut off from what is by nature a wild olive tree,   and were grafted contrary to nature into a cultivated olive tree, how   much more will these who are the natural branches be grafted into their own olive tree?
25 For I do not want you, brethren, to be uninformed of this mystery—so   that you will not be wise in your own estimation—that a partial   hardening has happened to Israel until the fullness of the Gentiles has come in; 26 and so all Israel will be saved; just as it is written,[/FONT]
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[/FONT][FONT="]Ex 19[/FONT][FONT="]
4 ‘You yourselves have seen what I did to the Egyptians, and how I bore you on eagles’ wings, and brought you to Myself. 5 Now then, if you will indeed obey My voice and keep My covenant, then you shall be My own possession among all the peoples, for all the earth is Mine; 6 and you shall be to Me a kingdom of priests and a holy nation.’ These are the words that you shall speak to the sons of Israel.”[/FONT]
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Rev 1
6 and He has made us to be a kingdom, priests to His God and Father—to Him be the glory and the dominion forever and ever. Amen.
1 Peter 2
4 And coming to Him as to a living stone which has been rejected by men,   but is choice and precious in the sight of God, 5 you also, as living stones, are being built up as a spiritual house for a holy priesthood, to offer up spiritual sacrifices acceptable to God through Jesus Christ. 6 For this is contained in Scripture:
“Behold, I lay in Zion a choice stone, a precious corner stone,
And he who believes in Him will not be disappointed.”
7 This precious value, then, is for you who believe; but for those who disbelieve,
“The stone which the builders rejected,
This became the very corner stone,”
8 and,
“A stone of stumbling and a rock of offense”;
for they stumble because they are disobedient to the word, and to this doom they were also appointed.
9 But you are a chosen race, a royal priesthood, a holy nation, a people for God’s own possession,   so that you may proclaim the excellencies of Him who has called you  out  of darkness into His marvelous light; 10 for you once were not a   people, but now you are the people of God; you had not received mercy, but now you have received mercy.[/FONT]
Turns out... I do know that. I also know that "all scripture is given by  inspiration from God and is profitable for correction, instruction,  reproof..." and that the NT writers were writing scripture by divine  inspiration.
I thought we were all on the same page there.
Are you saying that this "too" is being called into question??
BTW - you are probably wondering why I keep pointing out that the  calling of the Jewish nation failed at some point and is replaced now by  spiritual "Israel" as we see above in the case of Romans 2, Romans 9  etc.