There is a fair amount of misconception here regarding Int and spirit for Chaplain.
If you decide to go spirit build, be aware that you are giving up massive amounts of damage in order to get a stronger stone skin.
Only Intellect and Strength benefit from class rank 10% stat boost per class rank.
By the time you hit rank 7, that is a 70% stat difference between spirit and intellect.
Intellect scales all your healing skills and also your aspersion damage.
Spirit scales your stone skin, aspersion and mass heal and you will be severely lacking in damage.
Suggesting people should be going high spirit builds without telling them what exactly that entails, is misleading.
Intellect and Strength are the only stats which receive the rank bonus of 10% per rank.
source: the TOS wiki : http://wiki.tosbase.com/wiki/Stats#Bonus_Stat_Points