Genesis 26:1, 12-13

Now there was a time of hunger in the land, besides the time of hunger that happened during Abraham’s life. So Isaac went to the town of Gerar to see Abimelech king of the Philistines.

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.