Sforno on Numbers 20:19/ספורנו על במדבר כ׳:י״ט

1במסלה נעלה, Moses argued that if they were to cross through towns and come into contact with the inhabitants there might be concern about possible friction, but it was their intention to cross the land in areas that were totally uninhabited so that there could not be a question of possible friction and war.

2רק אין דבר ברגלי, we have not even with us anything that could become the focus of a quarrel.

3אעבורה, seeing that your only concern is possible friction and you do not object basically to our traversing your territory we will proceed to cross it seeing that you have nothing to fear.