Foundation For The Supernatural. By Pastor Bismark.

Acts 19:13-15 [13]Then certain of the vagabond Jews, exorcists, took upon them to call over them which had evil spirits the name of the Lord Jesus, saying, We adjure you by Jesus whom Paul preacheth. [14]And there were seven sons of one Sceva, a Jew, and chief of the priests, which did so. [15]And the evil spirit answered and said, Jesus I know, and Paul I know; but who are ye?