Genesis 21:30 KJV

28And Abraham set seven ewe lambs of the flock by themselves.

29And Abimelech said unto Abraham, What mean these seven ewe lambs which thou hast set by themselves?

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

31Wherefore he called that place Beersheba; because there they sware both of them.

32Thus they made a covenant at Beersheba: then Abimelech rose up, and Phichol the chief captain of his host, and they returned into the land of the Philistines.