Two Example
Infernal Magic:
Lucifer and Hidden Demons
Angelic Magic:
Angel of Omnipotence
There is no point in looking in many books, every magical system has many secrets, no matter how easy and simple it may seem.
These two are a good choice.
Jesus is definitely behind the second book. I know this because he came to me in a dream.
He is the master of this system. You won’t read that in any book, because it’s my personal gnosis. And yes, it matters.