Genesis 26:14-17

for he had possessions of flocks and herds and a great household, so that the Philistines envied him. Now all the wells which his father’s servants had dug in the days of Abraham his father, the Philistines stopped up by filling them with earth. Then Abimelech said to Isaac, “Go away from us, for you are too powerful for us.” And Isaac departed from there and camped in the valley of Gerar, and settled there.