WHO IS ISRAEL besides the Lost 10 Tribes? Gentiles are included! Gentiles are under Ephraim/Joseph who married a gentile and had two gentile sons, Ephraim & Manasseh which are grafted in.
If your a 'Christian' then YOU are part of Israel!
Who is blinded in Romans 2? ISRAEL!
Until the 'fulness of the gentiles' is complete.
Then the 'mystery' will be revealed.... It's happening now.