Genesis 26:15-18

15And all the wells that his father's servants had dug in the days of Abraham his father, the Philistines stopped them and filled them with earth.

16And Abimelech said to Isaac, Go from us; for thou art become much mightier than we.

17And Isaac departed thence, and pitched his camp in the valley of Gerar, and dwelt there.

18And Isaac dug again the wells of water that they had dug in the days of Abraham his father, and that the Philistines had stopped after the death of Abraham; and he called their names after the names by which his father had called them.