And if you say in your heart, ‘How shall we know the word which the Lord has not spoken?’— when a prophet speaks in the name of the Lord, if the thing does not happen or come to pass, that is the thing which the Lord has not spoken; the prophet has spoken it presumptuously; you shall not be afraid of him.
Now it shall come to pass, if you diligently obey the voice of the Lord your God, to observe carefully all His commandments which I command you today, that the Lord your God will set you high above all nations of the earth.