I still don't get it.
Did you not realize that our Lord Himself was JEWISH, as were ALL HIS DISCIPLES? Are you saying that only a gentile can be a Christian? How would you categorize Messianic Jews? My husband and I have been supporting Jews for Jesus for years... do you actually believe them outside the Church?
And that he might reconcile both unto God in one body by the cross , having slain the enmity thereby: And came and preached peace to you which were afar off, and to them that were nigh. For through him we both have access by one Spirit unto the Father." (Eph. 2:14-18).
It is by the cross, that both Jews and Gentiles now have access by one Spirit unto the Father. Believing Jews and believing Gentiles are no longer at enmity. For He has created from two believers, one. One New Man. Where there is neither Jew nor Gentile.