Deuteronomy 2:13

Now rise up, said I, and get you over the brook Zered. And we went over the brook Zered.

Israel crossed the brook Zered while turning north toward the promised land after having passed to the south of Edom. After that crossing the march continued to the east of Moab. That territory was not to be disturbed or taken, for God had given Ar to the descendants of Lot. The crossing opened a more hopeful stage of the journey, leading across an elevated plain where the air was cool and refreshing.