Matthew 12:26 KJV
And if Satan cast out Satan, he is divided against himself; how shall then his kingdom stand?
Matthew 12:26, King James Version
In context
25 And Jesus knew their thoughts, and said unto them, Every kingdom divided against itself is brought to desolation; and every city or house divided against itself shall not stand:
26 And if Satan cast out Satan, he is divided against himself; how shall then his kingdom stand?
27 And if I by Beelzebub cast out devils, by whom do your children cast them out? therefore they shall be your judges.