Matthew 12:26-28 Revised Standard Version (RSV)
26 and if Satan casts out Satan, he is divided against himself; how then will his kingdom stand? 27 And if I cast out demons by Be-el′zebul, by whom do your sons cast them out? Therefore they shall be your judges. 28 But if it is by the Spirit of God that I cast out demons, then the kingdom of God has come upon you.