For the furtherance of the Gospel rather than, as might have been expected, for its hindrance.
Furtherance (προκοπὴν)
Only here, Phi 1:25, and 1Ti 4:15. The metaphor is uncertain, but is supposed to be that of pioneers cutting (κόπτω) a way before (πρό) an army, and so furthering its march. The opposite is expressed by ἐγκόπτω to cut into; hence to throw obstacles in the way, hinder. Gal 5:7. See on 1Pe 3:7.