Translating the Journal
Quest #2318
At an impasse of sorts, you know that you will need the book translated into a language you can understand. There certainly are a number of people in the world who could do it; the closest location that might have someone who could, however, is the Kargath outpost in the Badlands. Perhaps that is a good place to start.
Objectives
Find someone who can translate the paladin's journal. The closest location that might have someone is Kargath, in the Badlands.