Genesis 20:1

And Abram journeyed on, continuing toward the Negev.

Now the angel of Yahweh found her by a spring of water in the wilderness, by the spring on the way to Shur.

Now Isaac had come from going to Beer-lahai-roi, for he was living in the land of the Negev.

And they dwelt from Havilah to Shur which is east of Egypt as one goes toward Assyria; he settled in the face of all his brothers.

Now there was a famine in the land, besides the previous famine that had occurred in the days of Abraham. So Isaac went to Gerar, to Abimelech king of the Philistines.

Then Moses had Israel set out 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.

Abraham Lies to Abimelech