Names are very important in magic. Everyone knows about sympathetic magic from the movies. The voodoo doll and the pin, photographs being used and mirrors. Yet few people realize that to get rid of a demon you essentially need its name.
People claim to be demonologist and do big ceremonies to get rid of demons. Yet if they can not know what the demons name is by looking at it and learn its different connections to regions of the world they are still in trouble. To produce the right results the person has to know the variations of how it can shift its energies and energy signature or they may be rid of one aspect of it but not the other aspects.
Eggregore demons are really difficult for this reason as they have a multiple number of named and unnamed demons to use the combinations of the letters, and energies to change shape. It also means the names used in the past such as if the demon was also recognized as some sort of God in an ancient culture or demon.
So everyone feels that it is a one shot ceremony but I always feel the ceremony should be done at least three times on different days and the house completely sealed and cleared three times also along with the persons car.
The reason for this is that demons leave energy eggs around like fleas leave eggs. They use them to come back and to multiply. The energies of a demon can be shifted to any of the names it had in other cultures so everything has to be cleared. The demons do use a standard type of shape that makes it so they are recognizable so it is experience and persistence that makes you successful in this type of work in helping others.
This also comes down to the victims names being harmed by others using magic. Everyone should baptize and name themselves with a secret name that they tell no one. The reason for this is that it closes off the persons inner core where nothing can get through easily. It is a simple protective method that is very useful and helpful.
Names add the final touch to any magic done on anyone or anything.