15 One day the evil spirit answered them, “Jesus I know, and Paul I know about, but who are you?”

Read Acts 19:15 Using Other Translations

And the evil spirit answered and said, Jesus I know, and Paul I know; but who are ye?
But the evil spirit answered them, "Jesus I know, and Paul I recognize, but who are you?"
But one time when they tried it, the evil spirit replied, “I know Jesus, and I know Paul, but who are you?”