OH! that's a good idea. if im following this right, we have to add the order of grey glyphs on the walls and doors near cerubin to the chests. OR! the one that's behind cerubin (look at the pictures showing the translation of "G X N I")
one thing, when i was at the Bane's room, i right clicked on the capsule and it said "This cannot be used now" and along the way to cerubin, there's this weird looking unredeemed statue near these necromancers, i right clicked on it and it said sum crap,
"For a moment the markings on the obelisk seem to sparkle, and you get a sensation in your body as if hands are reaching out clutching for your soul, but the glow fades out, and you are left with a numb feeling."
i just believe that it's a sequence of events in order to find out the mystery.