The resurrection of Jesus guarantees the acceptance of His sacrifice for the sins of His people and their justification before God. In the text before us, Paul corrects a very dangerous belief held by some that there is no resurrection from the dead. Paul addresses the problem by first restating the gospel. Jesus died, was buried, and rose again as established by the prophets and Jesus Himself.
Paul proceeds to demonstrate the futility of believing gospel if there is not resurrection. However, Christ indeed rose from the dead, ascended to the Father's right hand from which He now rules until all His enemies are subdued. The last enemy to be destroyed is death itself, which takes place in the resurrection of all believers when He comes again.