John Gill Commentary Numbers 21:22

"Let me pass through thy land: we will not turn aside into field, or into vineyard; we will not drink of the water of the wells: we will go by the king`s highway, until we have passed thy border." — Numbers 21:22 (ASV)

Let me pass through your land
Through some part of it, which would have been a shorter way to the river Jordan, over which Israel was to pass into the land of Canaan; the terms proposed, or things to be observed in their passage, which they would bind themselves strictly to, are the same that were made to the king of Edom. (See Gill on Numbers 20:17).