What advantages did the Jews have according to Romans 3?

Les explains that when Paul asks, 'What advantage then hath the Jew, or what profit is there of circumcision, or being an adherent of Judaism?' his answer is 'much' and 'every way.' The Jews had so much going for them: all the covenant promises, the Old Testament, the prophets, the Psalms, the temple, and the priesthood. But Paul says that still wasn't the most important. The most important was that they had the oracles of God. Les emphasizes that 'so much every way, chiefly because unto them were committed the oracles of God.' He also notes that even in the book of Acts, Luke was not a Gentile; he is convinced Luke had to be a Jew, because Scripture makes a point that only Jews wrote this book by inspiration of the Spirit. Thus the Jewish advantage was comprehensive, but the chief advantage was the divine revelation entrusted to them.