Matthew 12:25-27

Knowing their thoughts Jesus said to them, “Any kingdom that is divided against itself is being laid waste; and no city or house divided against itself will [continue to]stand. If Satan casts out Satan [that is, his demons], he has become divided against himself and disunited; how then will his kingdom stand? If I cast out the demons by [the help of]Beelzebul (Satan), by whom do your sons drive them out? For this reason they will be your judges.