John Gill Commentary Deuteronomy 2:27

"Let me pass through thy land: I will go along by the highway, I will turn neither unto the right hand nor to the left." — Deuteronomy 2:27 (ASV)

Let me pass through your land (See Gill on Numbers 21:22),

I will go along by the highway ;
the king's highway, as in the place referred to, the public road:

I will neither turn to the right hand nor to the left ;
to go into his fields and vineyards, and gather the fruit, or tread down the corn and vines, or do any manner of mischief to them; see the above place.