Deuteronomy 18:22

22 awhen 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; bthe prophet has spoken it presumptuously. You need not be afraid of him.

Jeremiah 28:9

9 cAs for the prophet who prophesies peace, when the word of that prophet comes to pass, then it will be known that the Lord has truly sent the prophet.”

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