Hmm . . . a long history?

[Zephora also stumbled upon a portentous fact – that the original crystals of the immortals in the hearts of the mountains contained special power over the respective angel who traveled within. Using this knowledge, she sought out Samkiel, a crazed deva loremaster, imprisoned by the Dark God for prophesying its fall.

Zephora used the information about the crystal prison to get Samkiel to talk and arm with more elaborate details, she hatched a plan to end the rule of the Dark Angels.

Over decades, she built a network of followers called the Order of Light. She searched out and found the Seven Druids, one of the only remaining religious organizations that survived. These druids were forced underground by the Dark God, fleeing to the Fey Realm from where they could maintain their position in the Material Plane.