Genesis
Chapters 21:29-34
American Standard Version
29And Abimelech said unto Abraham, What mean these seven ewe lambs which thou hast set by themselves?
30And he said, These seven ewe lambs shalt thou take of my hand, that it may be a witness unto me, that I have digged this well.
31Wherefore he called that place Beer-sheba. Because there they sware both of them.
32So they made a covenant at Beer-sheba. And Abimelech rose up, and Phicol the captain of his host, and they returned into the land of the Philistines.
33And Abraham planted a tamarisk tree in Beer-sheba, and called there on the name of Jehovah, the Everlasting God.
34And Abraham sojourned in the land of the Philistines many days.