Spiritually mature Christians adjust their attitude and mindset onward; they have a forward looking mindset. We are to follow Paul’s and other mature Chrisitan's example of making spiritual things a priority in their lives by developing an upward perspective.
The oldest written document of the New Testament is 1 Thessalonians. It gives us the oldest foundational principles of the church. 1 Thessalonians begins by turning the clock back to remember how the gospel saves and changes pagans.
The final chapter of Colossians is personal and practical. Paul names his own Kingdom Team. It begins with Jesus as captain and then includes Jews, Gentiles, males, females, superstars, doctors, felons, and one quitter. The big idea is there’s room for anyone on Team Jesus.