Luke 11:17-21

But He knew their thoughts and said to them, “Every kingdom divided against itself is laid waste; and a house divided against itself falls.

And if Satan also has been divided against himself, how will his kingdom stand? For you claim that I cast out the demons by Beelzebul.

Yet if by Beelzebul I cast out the demons, by whom do your sons cast them out? Therefore, they will be your judges.

But if I cast out the demons by the finger of God, then the kingdom of God has come upon you.

When a strong man, fully armed, guards his own house, his possessions are secure.