'King's' in the Bible

Let us pass, I pray thee, through thy country; we will not pass through fields, or through vineyards, neither will we drink water out of the wells: we will go by the king's road; we will not turn to the right hand nor to the left, until we have passed thy border.

Let us pass through thy land; we will not turn into the fields, or into the vineyards; we will not drink water out of the wells; on the king's road will we go until we have passed thy border.