These days it's not uncommon to hear Analogies between Demons, or The Devil, and Psychopaths.
I can certainly see some equivalents. Here's an example with Lucifer, The Light Bearer or The Light Bringer.
Psychopaths are not all about Lies or Lying. Sometimes - often, even - we tell the Truths nobody wants to hear. We Shed Light unto those dark little corners of people's souls that they do not want us to illuminate. Sometimes we can have a terrible knack for telling the truth. Christ would only see Light. But not Our Light, for we enlighten both Truth and Lie. We do not deny one and not the other. We Love it all, in our own sometimes strange ways. And our Love can be demanding.
For such is the nature of The Light that The Psychopath brings You: It is All Consuming!