Genesis 21:30-32 Modern English Version (MEV)
30 And he said, “You shall take these seven ewe lambs from my hand so that they may be a witness that I have dug this well.”
31 Therefore he called that place Beersheba, because the two of them swore an oath there.
32 Thus they made a covenant at Beersheba. Then Abimelek rose with Phicol, the commander of his army, and they returned to the land of the Philistines.