Commentaries:
Robertson's Word Pictures (NT)
Special miracles (dunameiv ou tav tuxousav). "Powers not the ones that happen by chance," "not the ordinary ones," litotes for "the extraordinary." All "miracles" or "powers" (dunameiv) are supernatural and out of the ordinary, but here God regularly wrought (epoiei), imperfect active) wonders beyond those familiar to the disciples and completely different from the deeds of the Jewish exorcists. This phrase is peculiar to Luke in the N.T. (also Acts 28:2), but it occurs in the classical Greek and in the Koin‚ as in III Macc. 3:7 and in papyri and inscriptions (Deissmann, Bible Studies, p. 255). In Samaria Philip wrought miracles to deliver the people from the influence of Simon Magus. Here in Ephesus exorcists and other magicians had built an enormous vogue of a false spiritualism and Paul faces unseen forces of evil. His tremendous success led some people to superstitious practices thinking that there was power in Paul's person.
Other Robertson's Word Pictures (NT) entries containing Acts 19:11:
Acts 1:5
Acts 8:9
Acts 19:10
Acts 19:16
Acts 19:23
Acts 28:2
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