I believe that when Christ came He was the Savior for any person who believed in Him, and there were no more Israel only, Jews, gentiles, women, men, but children of God and those who were not His children.
I also believe that God will not desert the Jews, God promised them he wouldn't. I believe we are not to judge their relationship with the Lord, and that our fleshly minds are incapable of this understanding, and a careful study of Romans, I believe, backs these beliefs up.
Even if my understanding of this is all wrong, one thing is for sure. It is not up to us to judge the relationship of God and Jews, that is the business of the Lord.