This needs to be banned until such time as the Chaos domain is also available...
Something I find funny because of how the theme and existing mechanics interact is that a really good use of your Voice of Authority free attack is to give it to a Rogue. They will get their Sneak Attack damage since it's a different turn.
Player A : Hey, I'm a lawful knight, why does your god keep blessing that shifty nerf-herder of a thief instead of me?"
@lowkey13 : You're a gnome paladin with a rapier. Even my god doesn't like you.
DM : *snicker*
The one thing I would change is to make the extra damage psychic instead of force--get a better "imposing order" vibe.