This topic is to hold the discussion of the phenomena that someone in the incarnation of an entity, as an example., the mage who says he IS Samael interviewed by E.A. earlier this year spoke about this in detail for those who caught that.
This is a spin off from the Royalty Obsession thread, which was geared towards larpers and why they’d want to claim this.
This thread is for taking the idea as a serious possibility, talking about how and why it could happen, what energetic structures are in place in these people, how to verify such gnosis and related. 
Questions:
- Why do people feel this way
- Can divination supply verification and how?
- Can asking the entity in question provide verification?
- Can you choose to be permanently possessed and become the entity?
etc.
Also see the related topic on belief in incarnation by @anon90630295 for those who feel an affinity or alignment with known entities.