As Paul continues talking to those whom he has already commended for their faithfulness, he goes a bit deeper. There are some pretty weight spiritual matters in this section, including resurrection, the Antichrist, and false prophets. Paul wants the Thessalonians to know that they have not missed the resurrection, that the Antichrist is yet to come, and they must be careful not to follow false prophets. And of course, all this can be wrapped up in a simple command: follow Jesus. Be obedient.