Read the Hallowed Letter and speak to Priestess Anetta in Northshire Abbey.
I was asked to bring this to your attention as soon as you returned from dealing with the Blackrock spies, <name>. It appears to be a letter sealed with the insignia of Priestess Anetta, our local priest trainer. I wouldn't hesitate to read it before you go about any other business here in the Abbey.
Ah, at last you've come. I knew you would find your way to me. The Holy Light shines upon you, and the path you've chosen. These times are harsh--the Burning Legion still has a presence upon Azeroth, the entirety of Kalimdor seeks new ways to defend itself from its own tribulations, and it is up to you to aid as many as you can.
As you grow in experience, return to me and I will do what I can to impart my knowledge upon you. Until then, go with compassion in your heart, and let wisdom be your guide. Remember, the world only becomes a better place if you make it so.
Upon completion of this quest you will gain: