NET
15 So the Philistines took dirt and filled up all the wells that his father’s servants had dug back in the days of his father Abraham.
Darby
15 And 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.
KJV
15 For all the wells which his father's servants had digged in the days of Abraham his father, the Philistines had stopped them, and filled them with earth.