Ephesians 2 makes it impossible to mingle Jewish saints of the Old Testament with the Church. The middle wall of partition separated them off, but now in Christ it is broken down. The Jew as such was bound not to accept the foundation of the Church; that is, he had to keep up the middle wall of partition and not let the Gentile in. But the principle of Christianity is that there is neither Jew nor Gentile, "for ye are all one in Christ Jesus." If the doctrine that Paul preached had been preached, say, in Hezekiah's time, it would have broken down Judaism altogether. The mixture that exists today is really the refusal of the truth of the Church; it practically denies that there is any.