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.
That one won’t have the intended effect because it only works on monotheistic religions. Hindus aren’t gonna think the message is coming from Vishnu.