Goblins have painted symbol on their Shields. Religion check succeeds. Compendium update. You check the compendium, and it says that the goblin symbol looks like a combination of the symbols of the dead three. It then shows you pictures of each of the symbols.
This now makes it so that players who aren't as familiar with such things can maybe get an understand clues pertaining to the story.
I mean, that's kind of what those skills are for. That's their purpose.