This promise has been kept, but the majority of israel has yet to realize it
Since the majority of the true Israel is made up by Gentiles, I think they have realized it. when a Jew becomes baptized into Christ, they are grafted back in and become part of the true Israel, the Church.
You are being obtuse, you know I am talking not about the Gentile church which wasgrafted into Israel, but about the physical seed of Abraham,Isaac and Jacob, to whom God has promised salvation and restoration. Check out Romans 9-11 you might really like it!