Did Jesus tell the twelve to preach His death, burial, and resurrection to the Gentiles?
No. Jesus did not send the twelve to the Gentiles with a gospel based on His death, burial, and resurrection. He could not, because those events had not yet happened. That message belonged to the Apostle Paul, who received it by revelation after Israel rejected the Messiah.
Les explains that Jesus never taught the twelve to go to the Gentiles with the gospel based on His death, burial, and resurrection, because those events had not yet occurred. This fits progressive revelation: Paul later received revelations that did not cancel what came before but built on it. After Israel according to prophecy rejected the Messiah, God saved Paul and said He would send him far hence to the Gentiles. Paul's message is centered on Christ's death, burial, and resurrection.