Genesis 26:12-16

Isaac planted seed in that land, and that year he gathered a great harvest. The LORD blessed him very much, and he became rich. He gathered more wealth until he became a very rich man. He had so many slaves and flocks and herds that the Philistines envied him. So they stopped up all the wells the servants of Isaac’s father Abraham had dug. (They had dug them when Abraham was alive.) The Philistines filled those wells with dirt. And Abimelech said to Isaac, “Leave our country because you have become much more powerful than we are.”