We will go by the king’s highway. — It is supposed that this military road led through the broad Wady el Ghuweir, which is celebrated for its excellent pasture and its numerous springs. (See Keil in loc.)
Related Commentaries of Numbers 20:17
Numbers 20:17
17 Let us pass, I pray thee, through thy country: we will not pass through the fields, or through the vineyards, neither will we drink of the water of the wells: we will go by the king's high way, we will not turn to the right hand nor to the left, until we have passed thy borders.