Read Deuteronomy 17:10 Using Other Translations
And thou shalt do according to the sentence, which they of that place which the LORD shall choose shall shew thee; and thou shalt observe to do according to all that they inform thee:
Then you shall do according to what they declare to you from that place that the LORD will choose. And you shall be careful to do according to all that they direct you.
You must carry out the verdict they announce and the sentence they prescribe at the place the LORD chooses. You must do exactly what they say.