Deuteronomy 18:20-22

New International Version

²⁰ But a prophet who presumes to speak in my name anything I have not commanded, or a prophet who speaks in the name of other gods,^(A) is to be put to death.”^(B)

²¹ You may say to yourselves, “How can we know when a message has not been spoken by the Lord?” ²² If what a prophet proclaims in the name of the Lord does not take place or come true,^(C) that is a message the Lord has not spoken.^(D) That prophet has spoken presumptuously,^(E) so do not be alarmed.