The gift in which the grace of God consisted, the apostleship to the Gentiles.
By the effectual working of His power (κατὰ τὴν ἐνέργειαν τῆς δυνάμεως αὐτοῦ)
Rev., better, according to the working, etc. The gift was bestowed in accordance with that efficiency which could transform Saul the persecutor into Paul the apostle to the Gentiles.