Luke 11:15-19

15 But some of them said, "He casts out demons by Beelzebul, the ruler of the demons."
16 Others, to test him, kept demanding from him a sign from heaven.
17 But he knew what they were thinking and said to them, "Every kingdom divided against itself becomes a desert, and house falls on house.
18 If Satan also is divided against himself, how will his kingdom stand? —for you say that I cast out the demons by Beelzebul.
19 Now if I cast out the demons by Beelzebul, by whom do your exorcists cast them out? Therefore they will be your judges.

Footnotes 1

New Revised Standard Version Bible, copyright 1989, 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.