Genesis 21:29-31 Easy-to-Read Version (ERV)
29 Abimelech asked Abraham, “Why did you put these seven female lambs by themselves?”
30 Abraham answered, “When you accept these lambs from me, it will be proof that I dug this well.”
31 So after that, the well was called Beersheba.[a] Abraham gave the well this name because it was the place where they made a promise to each other.