Acts 19:13-18 New Revised Standard Version (NRSV)
13 Then some itinerant Jewish exorcists tried to use the name of the Lord Jesus over those who had evil spirits, saying, “I adjure you by the Jesus whom Paul proclaims.” 14 Seven sons of a Jewish high priest named Sceva were doing this. 15 But the evil spirit said to them in reply, “Jesus I know, and Paul I know; but who are you?” 16 Then the man with the evil spirit leaped on them, mastered them all, and so overpowered them that they fled out of the house naked and wounded. 17 When this became known to all residents of Ephesus, both Jews and Greeks, everyone was awestruck; and the name of the Lord Jesus was praised. 18 Also many of those who became believers confessed and disclosed their practices.