You might say to yourself, “How can we know that the Lord did not speak the message?” If what the prophet proclaims in the name of the Lord is not true and it does not happen, then the message was not proclaimed by the Lord. The prophet has spoken presumptuously, you should not fear him.
Do not fear, for I am with you; do not be afraid, for I am your God. I will strengthen you and give you help, I will uphold you with my victorious right hand.