Who is God dealing with primarily after Israel's rejection, and how do Jews fit in?

Les explains that after Israel rejected the Messiah and rejected all of Peter’s and the Eleven’s preaching in the early years after the crucifixion, God sent Israel back into dispersion, especially after 70 A.D. and the destruction of the Temple. In the meantime, God is doing the opposite of His former dealings: instead of dealing with Israel primarily, He is dealing primarily with Gentiles. Jews can still come into the body of Christ individually, but not as a nation as God had dealt with them before. Les points to Acts 9, where Saul of Tarsus, who had tried to destroy Him from Judaism, is saved. While Saul was laboring under blindness, God told Ananias not to fear him because He would send him far hence to the Gentiles, and he would suffer for His name’s sake. This is where the Apostle Paul comes in as the Apostle, and Les directs attention to Romans chapter 11 verse 13.