I found this quest not as easy to understand as others...
Firstly even if you see the Pastor, you don't see that a quest is available until you actually GO there. Secondly, when you have done your 8 hours, you can't fullfill the quest until you go back there, you can't even see it, that it's there to be fulfilled.
Thirdly, and that's a meany, once you have completed the quest, and HOPEFULLY read the EPILOG, the Pastor seems to disappear from the map completely, which means if you haven't read the epilog, you are stuck, because you don't know where to go next.
In earlier quests you were able to see at least that the quest existed BEFORE you went there, then you were able to complete it from ANYWHERE once the requirments were fulfilled, and last you were able to read the epilog again any time...