There is a future reward for believers who give up worldly concerns, who live out the servant mindset of Christ, obeying Him even if it means giving up everything, even dying for Him, just as He died for the world.
Chapter 2 addresses specific heresies making their way through the Colossian church. Hearing that the church was entertaining false teaching was heartbreaking. Paul had prayed for these people and cared about them deeply.
Paul asks for prayers that his efforts to spread the gospel elsewhere would be as fruitful as they were with the Thessalonians. He tells them that he is confident that they will continue to grow in their faith. God and Christ strengthen us against the actions of the Devil.