Genesis 26:12-19

Then Isaac sowed in that land, and reaped in the same year a hundredfold; and the LORD blessed him. The man began to prosper, and continued prospering until he became very prosperous; for he had possessions of flocks and possessions of herds and a great number of servants. So the Philistines envied him. Now the Philistines had stopped up all the wells which his father’s servants had dug in the days of Abraham his father, and they had filled them with earth. And Abimelech said to Isaac, “Go away from us, for you are much mightier than we.” Then Isaac departed from there and pitched his tent in the Valley of Gerar, and dwelt there. And Isaac dug again the wells of water which they had dug in the days of Abraham his father, for the Philistines had stopped them up after the death of Abraham. He called them by the names which his father had called them. Also Isaac’s servants dug in the valley, and found a well of running water there.