How has the Jew and Gentile relationship changed from the Old Testament to now?
In the Old Testament, Israel held the covenants and Gentiles were aliens without hope; now, through Christ's blood, Gentiles are made nigh without entering Judaism. The relationship is inverted: formerly Jew only with few Gentile exceptions, now practically Gentile only with few Jewish exceptions.
Les explains that Gentile forefathers were once without Christ, aliens from the commonwealth of Israel, strangers from the covenants of promise, having no hope and without God in the world. But now in Christ Jesus, those who were far off are made nigh by the blood of Christ—not by entering a covenant relationship or coming under Judaism. He says the whole thing has been inverted: in the Old Testament it was Jew only with a few Gentile exceptions; now it is practically Gentile only with a few Jewish exceptions. Isaiah was bold that God was found of them that sought Him not and manifested to those who asked not after Him—the Gentiles. God sent Paul to those same people, fulfilling the rule that no one seeks God.