The contest includes every inner effort, such as cares, prayers, and concerns. It also includes every outward struggle and the overcoming of obstacles, both in those who receive the teaching and in those who oppose it.
“In a word, by saying ‘I strive,’ the Apostle showed that many are warring against him” (St. Chrysostom).
Yet, he says, “helped by the grace of God, I willingly take upon myself every labor and struggle, in order by the teaching of the preaching to make all men perfect” (Blessed Theodoret).
“According to His working which works in me.” Κατα την ενεργουμενην means according to His operation active in me. He arouses, He guides, He strengthens, and He brings every work to completion.
He is the One acting in me. I am only an instrument. He acts upon me. I simply do not resist and refuse no labor or struggle to which He arouses and leads me.
“The Apostle shows that everything in him is God’s work, and this not only from humility, but in truth” (St. Chrysostom).
Having said, “I labor and strive,” he refers all his labor and struggle back to Christ, as though saying: this is not my work. Christ makes me strong and sufficient for such labors and struggles with opponents. He gives me effective power.
“With power,” εν δυναμει, means powerfully. It is not only perceptible to the Apostle, but visible to all.
If the Lord’s assistance was not limited to an inward action in the Apostle, but was manifested outwardly, since the struggles before him were outward, then there is no reason not to admit that εν δυναμει points also to miraculous power.
This power everywhere accompanied the apostolic preaching and was manifested in signs whenever need required.
Ambrosiaster writes: “I conducted the struggle against the enemies of the gospel, he says, assisted by the power of signs. Whoever dared contradict the verbal teaching, at the prompting of the cunning devil, had to yield with shame before the power of signs.”
The final verse about the Apostle’s labors and struggles in the work of teaching and raising believers to perfection serves as a transition to the admonition of the Colossians.