I would recommend getting a skill reset and get 0 Aspersion, unless you plan to use the lvl 15 Aspersion for the defence buff.
The reason I say that is because Aspergillum will automatically use level 1 Aspersion even though you haven’t learned it and you can still increase it’s damage through the Enhance attribute from the Priest Master.
If you’re just leveling Aspersion for damage then that’s not a great idea, because the flat amount of damage you gain from leveling it up is very very small compared to the utility of leveling up other skills.
At the moment I have:
Aspersion 0 (Which Aspergillum uses 1 by default.)
Blessing 15
Resurrection 1
Sacrament 10
Revive 4
Mass Heal 10
Stone Skin 5
However I’m going to get a skill reset and make the following changes:
Resurrection -> 5
Mass Heal <- 5
Mostly because Mass Heal healing a little less is worth it for the faster cast on Resurrection, since it’s a single cast in an area in from of you.
Also see this thread:
You get more damage from spells with Int, but you get more damage with auto-attacks from Spr. Make your decision after reading through that, good luck with your Chaplain.