Genesis 21:14
Early in the morning, Abraham got up, took bread and a skin of water, put them on Hagar's shoulders, and sent her away with the boy. She left and wandered in the wilderness of Beersheba.

Genesis 21:31
So that place was called Beersheba, because it was there that the two of them swore an oath.

Genesis 26:32
On that same day Isaac's servants came to tell him about the well they had dug, telling him, "We have found water!"