Not sure what you mean by "but only in the sense that lsrael is in Christ." ? The Church is not Israel if that's what you mean ? ISRAEL is not the church.Yet only a remnant of 'old' lsrael, or Jacob, will be saved.
Yes, l believe that all lsrael will be saved, but only in the sense that lsrael is in Christ.
Those outside of Christ are not saved.