Deuteronomy 13:4

Ye shall walk after the Lord, your God, follow Him alone, in trustful obedience, and fear Him, and keep His commandments, and obey His voice, as it was definitely transmitted to them in the words of Moses, and ye shall serve Him, and cleave unto Him, cling firmly to the sure Revelation of His will, and make that the standard according to which all preaching in their midst should be examined and tested, also that of the true prophets, Deuteronomy 18:21.