Acts 19:14

14 and there were certain -- seven sons of Sceva, a Jew, a chief priest -- who are doing this thing;

Acts 19:14 Meaning and Commentary

Acts 19:14

And there were seven sons of one Sceva a Jew
Who strolled about the country, and used exorcisms: and

chief of the priests;
that were at Ephesus; not the high priest of the Jews, for he would have been at Jerusalem, and not at Ephesus; though indeed it does not necessarily follow from the words, that Sceva himself was there, only his seven sons: however, no such name appears in the catalogue of the Jewish high priests, nor is it reasonable to think, that seven sons of an high priest should follow such a vagabond course of life: Beza's ancient copy only calls him "a priest"; and the Alexandrian copy reads his name, Sceuta, and the Ethiopic version omits it; it is the same with (hawko) , and signifies a spectator, or observer; see the Targum on ( 2 Samuel 13:34 ) ( Isaiah 21:6 ) .

which did so;
adjured the devils in the name of Jesus, to come out; at least they did so in one case, as follows.

Acts 19:14 In-Context

12 so that even unto the ailing were brought from his body handkerchiefs or aprons, and the sicknesses departed from them; the evil spirits also went forth from them.
13 And certain of the wandering exorcist Jews, took upon [them] to name over those having the evil spirits the name of the Lord Jesus, saying, `We adjure you by Jesus, whom Paul doth preach;'
14 and there were certain -- seven sons of Sceva, a Jew, a chief priest -- who are doing this thing;
15 and the evil spirit, answering, said, `Jesus I know, and Paul I am acquainted with; and ye -- who are ye?'
16 And the man, in whom was the evil spirit, leaping upon them, and having overcome them, prevailed against them, so that naked and wounded they did flee out of that house,
Young's Literal Translation is in the public domain.