This is assuming that the thought is translated into something each person can understand.
The Purge begins in 3… 2… 1…
You have just lost the game
“The other religion is the true one.”
I feel like a way worse thing to say would be “your religion is the right one.” This would 100% increase religious tensions and fan the flames of fanaticism. Saying the other one is true isn’t likely to play into people’s already established worldviews and established worldviews are not changed by a single sentence regardless of who or how it’s said.
“Message to all players: Resetting simulation in 24 hours”
“Run.”