Shur; so usually called, Genesis 16:7; and by the Israelites, Etham, as may be gathered by comparing this place with Numbers 33:8, for both there and here it is said they went three days in this wilderness.
Related Commentaries of Exodus 15:22
Exodus 15:22
22 So Moses brought Israel from the Red sea, and they went out into the wilderness of Shur; and they went three days in the wilderness, and found no water.