Shur over against Egypt. Genesis 25:18. There is somewhat worthy remark in those three days travelling. You will find similar examples in other parts of scripture. Numbers 10:33. So they were commanded at first, to obtain leave from Pharaoh. See Exodus 3:18. And is not this, in a spiritual sense, sometimes the case of the seeking soul? They found no water.
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.