Deuteronomy 18:20-22

Names of God Bible

²⁰ But any prophet who dares to say something in my name that I didn’t command him to say or who speaks in the name of other gods must die.”

²¹ You may be wondering, “How can we recognize that Yahweh didn’t speak this message?” ²² If a prophet speaks in Yahweh’s name and what he says doesn’t happen or come true, then it didn’t come from Yahweh. That prophet has spoken on his own authority. Never be afraid of him.