Genesis 21:31-34 New American Standard Bible (NASB)

31. Therefore he called that place Beersheba, because there the two of them took an oath.

32. So they made a covenant at Beersheba; and Abimelech and Phicol, the commander of his army, arose and returned to the land of the Philistines.

33. Abraham planted a tamarisk tree at Beersheba, and there he called on the name of the Lord, the Everlasting God.

34. And Abraham sojourned in the land of the Philistines for many days.

Genesis 21