Genesis 26:18-21

18He dug out the wells that had been dug during his father Abraham’s lifetime. The Philistines had filled them in after Abraham’s death. He gave them the same names that his father had given them.

19Isaac’s servants dug in the valley and found a spring-fed well.

20The herders from Gerar quarreled with Isaac’s herders, claiming, “This water is ours!” So Isaac named the well Esek [Argument], because they had argued with him.

21Then they dug another well, and they quarreled over that one too. So Isaac named it Sitnah [Accusation].