Genesis 21:29-31

Living Bible

^28-29 But when he took seven ewe lambs and set them off by themselves, the king inquired, “Why are you doing that?”

³⁰ And Abraham replied, “They are my gift to you as a public confirmation that this well is mine.”

³¹ So from that time on the well was called Beer-sheba (“Well of the Oath”), because that was the place where they made their covenant.