“And the evil spirit answered and said, Jesus I know, and Paul I know; but who are ye?”
King James Version (KJV)
Ac 19:15,16 And the evil spirit answered. The evil spirit spoke and acted by means of the man possessed. It is possible that in this instance the spirit was overruled so as to magnify the gospel preached by Paul. On this question of demoniacal possession, see PNT "Mt 8:29".