What is national Israel waiting for while they are blinded?
National Israel, while spiritually blinded, is waiting for the return of their Messiah at the end of the tribulation. At that time, the nation—specifically the remnant—will be saved. Though nationally blinded today, individual Jews still have every opportunity to believe the Gospel during the age of grace.
Les explains that God deals with the Jew on two levels: national and individual. Nationally, Israel is blinded and awaits the return of their Messiah at the end of the tribulation, when the remnant will be saved. However, in the present age of grace, while the nation remains blinded, an individual Jew has every opportunity to believe the Gospel.