Amen jookbeard!
Deuteronomy 18:21-22 (English Standard Version)
21 And if you say in your heart, 'How may we know the word that the LORD has not spoken?'— 22 ( A ) when a prophet speaks in the name of the LORD, if the word does not come to pass or come true, that is a word that the LORD has not spoken; ( B ) the prophet has spoken it presumptuously. You need not be afraid of him.
The preceding verse is a stern warning.
Deuteronomy 18:20 (English Standard Version)
20 (A) But the prophet who presumes to speak a word in my name that I have not commanded him to speak, or [a] who speaks in the name of other gods, that same prophet shall die.'
Blessings,
Stephen