Mark 3:23-27

So Jesus called them over to him and began to speak to them in parables: ‘How can Satan drive out Satan? If a kingdom is divided against itself, that kingdom cannot stand. If a house is divided against itself, that house cannot stand. And if Satan opposes himself and is divided, he cannot stand; his end has come. In fact, no-one can enter a strong man’s house without first tying him up. Then he can plunder the strong man’s house.