The World of Warcraft is an expansive universe. You're playing the game, you're fighting the bosses, you know the how -- but do you know the why? Each week, Matthew Rossi and Anne Stickney make sure you Know Your Lore by covering the history of the story behind World of Warcraft.
.@yuvalaziza Both priests and paladins can wield the Holy Light. However, not all wield it through the same means (e.g., Elune, An'she). :) - Sean Copeland (@Loreology) July 22, 2013
These types of questions get asked a lot, however. And while not everything regarding magic in Warcraft has been fully defined, we can definitely take a look at these different schools of magic and how they relate to one another on Azeroth.