Wells: The Occasion of Feuds: Between Isaac and Abimelech

So the Philistines took dirt and stopped up all the wells that his father’s servants had dug in the days of his father Abraham. …

On that same day, Isaac’s servants came and told him about the well they had dug. “We have found water!” they told him.

So he called it Shibah, and to this day the name of the city is Beersheba.