People won’t know where the message comes from, they’ll just hear your voice as though you were standing next to them. Everyone hears it at the same time. The message is not translated into anyone’s native language, everyone hears it exactly as you say it. The maximum length is 6 of your breaths.
“You have been chosen. Tell no one. The false idol must be killed.”
Then just watch the chaos unfold.
This is the kinda evil shit I came to the comments for. Well done.
Side note: nobody let this person gain any form of power