Lk 11, 15-26
But some of them said, ‘It is through Beelzebul, the prince of devils, that he drives devils out.’ Others asked him, as a test, for a sign from heaven; but, knowing what they were thinking, he said to them, ‘Any kingdom which is divided against itself is heading for ruin, and house collapses against house. So, too, with Satan: if he is divided against himself, how can his kingdom last? – since you claim that it is through Beelzebul that I drive devils out. Now if it is through Beelzebul that I drive devils out, through whom do your own sons drive them out?