Deuteronomy 2:27

27 ‘Let me pass through your land, I will ¹go only on the highway; I will not turn aside to the right or to the left.

Deuteronomy 17:11

11 ^aAccording to the ¹terms of the law which they teach you, and according to the judgment which they tell you, you shall do; you shall not turn aside from the word which they declare to you, to the right or the left.