Genesis 21:31-33 Revised Standard Version Catholic Edition (RSVCE)
31 Therefore that place was called Beer-sheba;[a] because there both of them swore an oath. 32 So they made a covenant at Beer-sheba. Then Abim′elech and Phicol the commander of his army rose up and returned to the land of the Philistines. 33 Abraham planted a tamarisk tree in Beer-sheba, and called there on the name of the Lord, the Everlasting God.