Who is God dealing with primarily after Israel rejected the Messiah?
After Israel rejected the Messiah and Peter's preaching, God turned from dealing primarily with Israel as a nation and began dealing primarily with the Gentiles, forming the body of Christ. Individual Jews may still enter, but not as a nation. This shift follows Acts chapter 9 and the Apostle Paul's commission.
Les explains that when it became evident Israel would not accept their Messiah, and after Israel rejected Peter's and the Eleven's preaching in the first years after the crucifixion, God sent Israel back into dispersion, especially after A.D. 70 and the destruction of the Temple. In the meantime, God is doing just the opposite: instead of dealing with Israel primarily, He is dealing primarily with Gentiles. Individual Jews can come into the body of Christ, but not as a nation as God was dealing with them back there. Acts chapter 9 records Saul of Tarsus being saved, and God told Ananias that He would send him far hence to the Gentiles, where he would suffer for His name's sake. Paul then comes in as the Apostle, and Les points to Romans chapter 11 verse 13.