Bereshis 21:31-33

Orthodox Jewish Bible

³¹ Therefore he called that place Beer-Sheva; because there they swore an oath both of them.

³² Thus they made a brit at Beer-Sheva: then Avimelech rose up, and Phichol the sar tzeva of his, and they returned into eretz Pelishtim.

³³ And Avraham planted an eshel (tamarisk tree) in Beer-Sheva, and called there on the Shem of Hashem El Olam.