Genesis 26:1-5, 12-17

Now there was a famine in the land, besides the former famine that was in the days of Abraham. And Isaac went to Gerar to Abimelech king of the Philistines. And the LORD appeared to him and said, “Do not go down to Egypt; dwell in the land of which I shall tell you. Sojourn in this land, and I will be with you and will bless you, for to you and to your offspring I will give all these lands, and I will establish the oath that I swore to Abraham your father. I will multiply your offspring as the stars of heaven and will give to your offspring all these lands. And in your offspring all the nations of the earth shall be blessed, because Abraham obeyed my voice and kept my charge, my commandments, my statutes, and my laws.”

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.) And Abimelech said to Isaac, “Go away from us, for you are much mightier than we.” So Isaac departed from there and encamped in the Valley of Gerar and settled there.