‘Jesus answered, ‘I am not demon-possessed, but I honour my Father and you dishonour me. Yet I do not seek my own glory, for there is one who seeks it, and he is the judge'.
Jesus denied their charge. Rather than being demon possessed it was He Who truly honoured the Father. That was patently something that no demon possessed person would do. Furthermore He wanted them to know that He was not fighting for His own honour. There was Another Who would defend His honour. And that One was the Judge of all men. And as such He was seeking to glorify Jesus. By seeking to dishonour Jesus, therefore, the Judaisers were attacking God Himself.