Genesis 21:31-33

Young's Literal Translation

³¹ therefore hath he called that place `Beer-Sheba,' for there have both of them sworn.

³² And they make a covenant in Beer-Sheba, and Abimelech riseth -- Phichol also, head of his host -- and they turn back unto the land of the Philistines;

³³ and [Abraham] planteth a tamarask in Beer-Sheba, and preacheth there in the name of Jehovah, God age-during;