Deuteronomy 17:10-11

And thou shalt do according to that thing which they of that place (which the Lord hath chosen) shewe thee, and thou shalt obserue to doe according to all that they informe thee.

According to the Lawe, which they shall teach thee, and according to the iudgement which they shall tell thee, shalt thou doe: thou shalt not decline from the thing which they shall shew thee, neither to the right hand, nor to the left.