Genesis 26:16-21

Then Abimelech said to Isaac, “Leave our country. You have become more powerful than we are.” So Isaac left and set up his camp in Gerar Valley, where he stayed for some time. He dug once again the wells which had been dug during the time of Abraham and which the Philistines had stopped up after Abraham's death. Isaac gave the wells the same names that his father had given them. Isaac's servants dug a well in the valley and found water. The shepherds of Gerar quarreled with Isaac's shepherds and said, “This water belongs to us.” So Isaac named the well “Quarrel.” Isaac's servants dug another well, and there was a quarrel about that one also, so he named it “Enmity.”