Knowledge keeper here. So rather than bore you with this journal entry I decided to just pull out the information and summarized it
Combat class skills
Holy martial arts - allows user to infuse holy magic into melee fighting if unarmed
Holy bullet - fires compressed 'bullet' of holy magic. Can be charged. The longer the charge the more powerful the attack
Holy blitz - stronger version of holy bullet which brings a rain of holy bullets around the user. Effective for monster crowd control
Support type skills
Heal - expend mana in exchange for helping allies or creatures heal at an accelerated rate
Detoxify - purges toxins and poisons from body. Can be used on toxic slices to kill them
Rest - puts subject into a deep sleep to prevent further harm from stress
Combat/support skills
Weapons blessing - afix a weapon with the holy attribute. Projectile launching weapons will automatically use mana in the air to create a projectile of holy magic.
Area heal - creates a barrier which harms undead and unholy creatures while healing allies
Sacred ground - renders area inhospitable for undead type creatures cases debuffs on most monsters
Revival - revive a person in exchange for their exp or levels. Must be done within 24 hours of death
Sanctuary - creates impenetrable barrier that prevents entry or exit by monsters or allies for one hour. All other skills locked during this time