3:7 Whereof I was made a minister. A minister to make known this mystery; God's gracious purpose to the Gentiles.
According to the gift of the grace of God. The apostolic office with all the accompanying signs of apostleship.
3:7 According to the gift of the grace of God - That is, the apostle - ship which he hath graciously given me, and which he hath qualified me for. By the effectual working of his power - In me and by me.
3:1-7 For having preached the doctrine of truth, the apostle was a prisoner, but a prisoner of Jesus Christ; the object of special protection and care, while thus suffering for him. All the gracious offers of the gospel, and the joyful tidings it contains, come from the rich grace of God; it is the great means by which the Spirit works grace in the souls of men. The mystery, is that secret, hidden purpose of salvation through Christ. This was not so fully and clearly shown in the ages before Christ, as unto the prophets of the New Testament. This was the great truth made known to the apostle, that God would call the Gentiles to salvation by faith in Christ. An effectual working of Divine power attends the gifts of Divine grace. As God appointed Paul to the office, so he qualified him for it.