Deuteronomy 18:18-22

I will raise up for them a prophet like you from among their brothers. I will put My words in his mouth, and he will tell them everything I command him. I will hold accountable whoever does not listen to My words that he speaks in My name. But the prophet who dares to speak a message in My name that I have not commanded him to speak, or who speaks in the name of other gods — that prophet must die.’ You may say to yourself, ‘How can we recognize a message the LORD has not spoken? ’ When a prophet speaks in the LORD’s name, and the message does not come true or is not fulfilled, that is a message the LORD has not spoken. The prophet has spoken it presumptuously. Do not be afraid of him.