After binding the demon, the exorcist demands to know the demonโs name. This is a reminder that the demons are always liars. They always use a disguise. They always shield their real presence and hide behind some other alias, some other identity and some other, more attractive guise. The lesson is, to fight evil it must first be identified.
Secondly, the exorcist must never allow the conversation to become personal. It is always about Jesusโnever about the exorcist. One exorcist in the book fell into the trap when the demon said the exorcist would be made to suffer. When the exorcist said, โI am willing to sufferโฆโ he made it about himself and was doomed. The lesson is, to fight evil it is always Jesusโnever us. We cannot fight this in our own power.
Thirdly, the exorcist is told to never engage the demon in any kind of seemingly logical debate or conversation because the demon will always win. He is smarter and a smooth liar. Besides, he does not use logic as a way to discover truth, but as a way to distort truth and promote a lie. The lesson being, when confronted with a false teacher it is usually a waste of time to debate and discuss. The apostles simply condemned them and were done.
This is why, down through history, the most powerful teachers in the church did not debate false teachers who were obstinate in their lies. They pronounced against them and left them to the judgement of God.