Acts 19:11 - Ellicott's Commentary On The Whole Bible

And God wrought special miracles by the hands of Paul. — The Greek phrase is negative: no common works of power — not such as one might meet with any day. (See Note on Acts 28:2, where the same phrase recurs.) The noun is that which was technically used by physicians for the healing “powers” or “virtues” of this or that remedy, and is so far, though used freely by other writers, characteristic of St. Luke.