Acts 19:16

And the man in whom the evil spirit was leaped on them, and overcame them, and prevailed against them, so that they fled out of that house naked and wounded.

And the man in whom the evil spirit was. Mark the clear line of demarcation here between "the evil spirit which answered and said," and "the man in whom the evil spirit was." The reality of such possessions could not be more clearly expressed.

Leaped on them, and overcame, [ katakurieusas (G2634) amfoteroon (G297)] - rather, 'mastered them both' (for this reading is not only better attested externally [ amfoteroon (G297) than autoon (G846) of the Received Text], but has internal evidence in its favour; for it never would have crept into the text if not genuine.)

And prevailed against (or 'overpowered') them, so that they fled out of that house naked and wounded.