Genesis 26:12-15

And Isaac sowed in that land and reaped in the same year a hundredfold. The LORD blessed him, and the man became rich, and gained more and more until he became very wealthy. He had possessions of flocks and herds and many servants, so that the Philistines envied him. (Now the Philistines had stopped and filled with earth all the wells that his father’s servants had dug in the days of Abraham his father.)