I think Raphael just needs a glimpse to understand...
Yeah, he'll see something like this:
This character is a good mage.
This character is cursed in some way.
This character is emotionally detached.
This character is attracted to the eye's owner.
This character often contemplates things.
And maybe something else, but Rinze's name won't appear there. And Keli can't be an Apostle. It's a dead end. Technically, Keliandra isn't even possessed.