St. Paul wrote to the Colossians:
I am a minister of the Body of Christ…to bring to completion for you the word of God. (1:25)
To bring the word of God to completion for you.
Now, in this letter, it seems that St. Paul was addressing a largely non-Jewish audience. In other words, a confused and deluded, formerly pagan audience. At the beginning of the letter, the Apostle gave them a vivid image by which they can understand reality. To summarize:
The Creator made all things through His eternal Word, Who is now made man, Jesus. Jesus gives the universe and history its center. His resurrection began the final fulfillment of God’s original purpose in creating the world. Everything has been made to serve as a kind of choir, giving praise to the eternal glory of the Maker. Christ sings the first voice of the choir, by the entirety of His life. All the rest of the music proceeds from Him, as we strive to harmonize.
Father Mark White Blog 