But then again, as pointed out by Niara, breaking the oath should be more deliberate than that (at least, I share that opinion). People/Characters can make honest mistakes, even paladins.
What isn't deliberate about:
- attacking non-hostile
- making enemies non-hostile via dialogue and then murdering them
- double crossing people (I have yet to see someone trying it with Minthara at the Grove, but someone did Oath break by taking both quest in Anders vs Karlach, but I'm not quite sure if the person found out Anders's secret)
There is a case that sound like a bug where a roaming non-hostile will entire a fight, turn hostile and count as killing a non-hostile despite the creature initiating to attack too.
That's how you break your oaths currently. Stealing doesn't break the oaths, but I haven't tried to steal the Idol, only stuff lying around in the grove.
Being super harsh rendering judgement to Khaga's thief problem didn't cause oathbreaking for my Of the Ancient despite a mercy option being available too.
What I'm seeing is that many people don't know how to play those Paladin subclass. Which is something the game could do better at, since it doesn't actually tell you what are the actual oaths you aren't supposed to break. I also get the impression that many pnp players have very permissive GMs who don't pay much attention to the actual oaths tenets and subclass description in the manuals...
I also have an issue with people claiming Paladins don't need gods and can be any alignments in 5e when the subclass talks using divine symbols and divine abilities all the time and the oaths tenets force you to act into specific alignment range.
