Paul prays for the Colossians to receive "spiritual wisdom" so that they might "share in the inheritance of the saints in the kingdom of light."
The writer(s) urged the Colossians to remain focused on Christ, whom he characterized as "before all things."
Colossians represents an example of "high Christology," in which Jesus is presented not only as the risen savior, but also as the complete Incarnation of God and primary agent of creation.
Theologically, the letter to the Colossians is important for two main reasons.
Tychicus, the author states, would be the bearer of the letter, and he will inform the Colossians of the state of the Apostle (4:7-9).
The gospel was taught to the Colossians by Epaphras (1:4-8), about whom little is known other than that Paul describes him as a "fellow prisoner" in the Epistle to Philemon.
Many see a close connection between Colossians and Ephesians, which seems to borrow various phrases and concepts from it.
Second, Colossians is important for its rejection of mystical speculation and asceticism, especially of the Gnostic variety.