Is Paul in error when he states.....
Galations 3:28There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.
John states:
Revelation 7:4And I heard the number of them which were sealed: and there were sealed an hundred and forty and four thousand of all the tribes of the children of Israel.
....impying that there is a difference between Jews and Gentiles.
Are we all one in Christ or not?
I've said this on other forums 'til the cows come home that there is the election of
race (family lineage and genealogy where some promises went), then there's the election of
grace. Most replacement, amillennial theology seems to tie up the covenants into one simple "grace" package and totally ignores the People of the Book by whom grace came and is, in fact, the subject of the vast majority of the bible. But as long as these two recipients of race and grace are denied, then your question is going to be asked over and ever and over again because the bible then becomes a confused mess of Babylon.
And for anyone out there debating the word "chosen" for the umpteenth time chosen is not necessarily a "superior" race, but rather a DUTY to be performed as a result of God's calling to be a light to all of fallen man, in which the called ones are equally fallen.
And secondly, when we talk about "promises", many are earthly promises so chosen does not equal "saved". They are promises enjoyed here and now for the purpose of God's glory. There are two sides of a coin which is presented here, but just because a coin lands on "heads" does not mean there's no "tails" because it can't be seen. But too many folks rather say there's only a "heads" and keep things one-tracked. Also, I doubt there's many who could even recite what the "promises" contain--- but they are national in scope, not only spiritual.
So the answer to your question is that God is not thru with Israel yet. He not only chosen them as a race to be his oracle people, but promises that those specific people would one day be saved, thus enjoying in the fullness every earthly thing promises..... but oh, there has to be a millennium to accomplish that.