User blog comment:Noctosphere/so? who's the first demon?/@comment-31564841-20160809120930/@comment-1975828-20160809132056

Err, wasn't Lucifer cast into the Cage because he turned Lilith into a demon, and tricked Eve into eating the fruit?

It is also never said when Cain received the Mark.

But the fact is, Lilith is the very first demon.