This is kind of a composite of Gideon Emery's distinctive VO from a few sources.  It's mainly based on the male Crusader from Diablo III.

We've got four variants here to choose from:

Pious Crusader (of the light)
Pious Crusader (generic faithful) - Mentions faith.  No mention of The Light.
Reserved Crusader (of the light) - has a vanilla game bug. 
Reserved Crusader (generic) - has a vanilla game bug.  No mention of The Light or faith.

Unfortunately Voice packs can't be added with this method, only replaced.  So, here's a quick comparison video:



Pious variants:  Roughly 126 unique barks of 132 slots. There are just a couple of whisper barks that have been recycled from the normal barks.  These are major improvements over the original reserved variants, with adjusted volume, more appropriate lines for certain actions and they don't suffer from the Reserved bug.

Reserved variants: 115 unique lines or exertion noises out of 127 potential slots.  Unfortunately due to a game bug the power attack and short attack exerts never play in this version.  The sound files are present but I'm guessing the triggers aren't set up correctly.


Installation : 

• Download the mod and open the zip file.
• Navigate to *Pathfinder Wrath Dir*\Wrath_Data\StreamingAssets\Audio\GeneratedSoundBanks\Windows
• Create a back-up of PC_Male_Reserved_GVR_ENG.bnk
• Copy the modded PC_Male_Reserved_GVR_ENG.bnk from the zip file to the directory (*Pathfinder Wrath
  Dir*\Wrath_Data\StreamingAssets\Audio\GeneratedSoundBanks\Windows) and overwrite.
• (Optional portrait) Copy the "Human Crusader" Folders to your "Portraits" folder.
  

Thanks to u/Rational_Drunk for the guide to modifying sound files in PF:
https://www.reddit.com/r/Pathfinder_Kingmaker/comments/9u9ldw/tutorial_on_how_to_modify_sound_files_in/
And here's tPoncho's updated guide and mirror for the python script in case others are looking:
https://www.nexusmods.com/pathfinderwrathoftherighteous/articles/4