According to the explanation of St. John Chrysostom, “the Apostle wants the Colossians to doubt nothing, and to be convinced in everything. I know, he says, that you believe, but I want you to be convinced, richly convinced, in everything and firmly.
“You know how I care that you be convinced reasonably, not blindly.”
“The Apostle,” writes Blessed Theophylact, “neither condemns the Colossians nor fully frees them from blame. ‘I have a struggle,’ he says. For what purpose? So that they may not think differently, but be in agreement and be joined in one faith.
“How? Not by compulsion and force, but in love. He said this because difference of mind gives birth to schism.”
Noting the primary significance of love here, a modern commentator writes: “The Apostle imagines the community of believers as a body, whose living nerve is the feeling of love. Love unites all its members and brings them into ordered unity.
“He expresses his wish for the Colossians that their hearts be filled with that feeling which flows from the consciousness of oneness of mind. This feeling would be for them not only consolation in the present circumstances, but also a means of spiritual and moral unity.
“This is the meaning of the apostolic good wish: that their hearts may be comforted, being knit together in love” (N. Mukhin).
In what must there be oneness of mind? “In the mystery of salvation in Christ. Come together with firm convictions in this, admitting no discord, so that you may always remain in a joyful and consoling state.”
“In the knowledge of the Lord and Savior are all wisdom and all knowledge. Whoever knows Him as Savior, in this very knowledge acquires all wisdom. The knowledge of the Lord as Savior is the knowledge of the divine economy of our salvation in Him. Or, what is the same thing, it is the knowledge of the mystery of God” (Bishop Theophan).