Bible: Deuteronomy 18:20-22

18:20But if any prophet presumes to speak anything in my name that I have not authorized 1  him to speak, or speaks in the name of other gods, that prophet must die. 18:21 Now if you say to yourselves, 2 How can we tell that a message is not from the Lord?’ 3  18:22 whenever a prophet speaks in my 4  name and the prediction 5  is not fulfilled, 6  then I have 7  not spoken it; 8  the prophet has presumed to speak it, so you need not fear him.”

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