Numbers 20:14

Compare the marginal reference. It appears from comparing Numbers 20:1 with Numbers 33:38, that the host must have remained in Kadesh some three or four months. No doubt time was required for re-organization. In order to gain the banks of Jordan by the shortest route they had to march nearly due east from Kadesh, and pass through the heart of the Edomite mountains. These are lofty and precipitous, traversed by two or three narrow defiles. Hence, the necessity of the request in Numbers 20:17.

Thy brother - An appeal to the Edomites to remember and renew the old kindnesses of Jacob and Esau Genesis 33:1.

It appears from Judges 11:17 that a similar request was addressed to the Moabites.