Bereshis 21:29-31

Orthodox Jewish Bible

²⁹ And Avimelech said unto Avraham, What mean these seven ewe lambs which thou hast set apart by themselves?

³⁰ And he said, For these sheva ewe lambs shalt thou accept of my hand, that they may be a witness unto me, that I have dug this well.

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