Devorah is the founder's only living daughter and is considered the oldest surviving Arcana Master on the planet; filled with vast knowledge and wisdom gathered over one hundred thousand years, every little action of hers had a deep meaning. Suspecting or questioning her actions is akin to a grave sin.
Or atleast, that's what Qridus believed so far.
Hence, even after learning that the humanoid monster he was familiar with for a while was actually none other than Knull herself, Qridus didn't question her.
Seeing his successor summoning his Arcana spirits in a way that indicates a battle, Qridus got incredibly angry.
He didn't hesitate to use his demigod aura to pressure Azzy while ensuring others weren't affected, "Stand down, Azrael."