Was God unfair for focusing on Israel first instead of the Gentiles?
God was not unfair in focusing on Israel first, because He knew what the Gentiles would have done with His offer of salvation; they had trampled it underfoot for 2,000 years. He chose one nation to use as a channel back to the Gentiles, though that favored nation also failed.
Les explains that God was not being unfair, because He knew what those Gentiles would have done with His offer of salvation. They had trampled it underfoot for 2,000 years, so God said He would do something different: deal with just one little nation and bring them to the place where He could use them to go back to those Gentiles. But even the favored nation failed. So God then went to the Gentiles without the nation of Israel, which is what Paul was proclaiming. The Jew had those promises, rejected them, and God sent them into dispersion. Now He has turned to the Gentiles with salvation based not on temple worship or keeping the Law, but on the fact that when Christ died, He paid the sin debt. Because Israel was set aside, salvation has come to us Gentiles. Les also warns not to think God is all through with the Jew; He is not, and He will still come back to the Jew.