Acts 19:8-18

8 And he entered the synagogue and for three months spoke boldly, arguing and pleading about the kingdom of God;
9 but when some were stubborn and disbelieved, speaking evil of the Way before the congregation, he withdrew from them, taking the disciples with him, and argued daily in the hall of Tyran'nus.
10 This continued for two years, so that all the residents of Asia heard the word of the Lord, both Jews and Greeks.
11 And God did extraordinary miracles by the hands of Paul,
12 so that handkerchiefs or aprons were carried away from his body to the sick, and diseases left them and the evil spirits came out of them.
13 Then some of the itinerant Jewish exorcists undertook to pronounce the name of the Lord Jesus over those who had evil spirits, saying, "I adjure you by the Jesus whom Paul preaches."
14 Seven sons of a Jewish high priest named Sceva were doing this.
15 But the evil spirit answered them, "Jesus I know, and Paul I know; but who are you?"
16 And the man in whom the evil spirit was leaped on them, mastered all of them, and overpowered them, so that they fled out of that house naked and wounded.
17 And this became known to all residents of Ephesus, both Jews and Greeks; and fear fell upon them all; and the name of the Lord Jesus was extolled.
18 Many also of those who were now believers came, confessing and divulging their practices.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.