On the first cast he's fine, after that and he's responsible for breaking up a few families who insist that their loved ones "could never be evil", he's wrapped up with the local magistrate for months, maybe it even makes it to the Duke himself.

The second time, after his resentment to the people who caused him suffering, his internal wish that they go as well. He's fucking gone and you need a new priest.

*Edit- NVM, since the cleric/priest/whatever is the same level as the caster (the same cleric), it's just making him deaf for a few minutes, that'll be more of a wakeup call for him maybe.