Genesis 26:12-15

Isaac planted crops in that land, and in the same year reaped a hundred-fold harvest, for YAHWEH greatly blessed him! Isaac grew richer and richer until he was extremely wealthy. He acquired so many flocks and herds and so many servants that the Philistines grew jealous, so the Philistines stopped up all of Isaac’s wells and filled them with dirt—the same wells his father’s servants had dug in the time of Abraham.