NET
7 I became a servant of this gospel according to the gift of God’s grace that was given to me by the exercise of his power.
Darby
7 of which I am become minister according to the gift of the grace of God given to me, according to the working of his power.
KJV
7 Whereof I was made a minister, according to the gift of the grace of God given unto me by the effectual working of his power.