Did Jesus tell the twelve to preach His death, burial, and resurrection for salvation?
No. The twelve were not sent to preach His death, burial, and resurrection for salvation, because those events had not yet occurred. That gospel message was later revealed to the Apostle Paul, who alone proclaimed salvation based on Christ's finished work.
Les explains that Jesus could not have commanded the twelve to preach His death, burial, and resurrection for salvation because it had not yet happened. Jesus never taught the twelve to go out to the Gentiles with the gospel based on His death, burial, and resurrection. That revelation was given later to the Apostle Paul, who received the doctrines of grace. Paul is the one who proclaimed that message; Jesus did not tell the twelve to preach it for salvation.