Those of Jewish blood are no better --or worse-- than the Gentile.
National Israel has been cut off and must be "grafted in" to the Israel of God on an individual basis. Those of Jewish blood are no better or worse than the Gentile. We all must accept Jesus as the Messiah and act accordingly or be "cut off".
(19) Thou wilt say then, The branches were broken off, that I might be graffed in. (20) Well; ** because of unbelief they were broken off,**and thou standest by faith. Be not highminded, but fear: (21) For if God spared not the natural branches, **take heed lest he also spare not thee.**
(22) Behold therefore the goodness and severity of God: on them which fell, severity; but toward thee, goodness, if thou continue in his goodness: **otherwise THOU ALSO shalt be cut off.**
There is a much more sinister aspect to the situation of helping Israel as a nation. If in fact they are a nation which supports an antiChrist religion then Satan has tricked modern Christianity and those likeminded among the government into believing they must support those who are contrary to the will of God.
The important thing is not to reject the Jewish people; but to embrace those who turn to Jesus.
The Seven Deadly Deceptions Of Counterfeit Christianity