Genesis 21:31-33

MKJV(i) 31 This is why he called that place Beer-sheba, because they swore, both of them, there. 32 So they made a covenant at Beer-sheba. Then Abimelech and Phicol, the commander of his army, rose up. And they returned to the land of the Philistines. 33 And Abraham planted a tree in Beer-sheba, and called there on the name of Jehovah, the everlasting God.