Genesis 26:1-6

A severe famine now struck the land, as had happened before in Abraham’s time. So Isaac moved to Gerar, where Abimelech, king of the Philistines, lived. The LORD appeared to Isaac and said, “Do not go down to Egypt, but do as I tell you. Live here as a foreigner in this land, and I will be with you and bless you. I hereby confirm that I will give all these lands to you and your descendants, just as I solemnly promised Abraham, your father. I will cause your descendants to become as numerous as the stars of the sky, and I will give them all these lands. And through your descendants all the nations of the earth will be blessed. I will do this because Abraham listened to me and obeyed all my requirements, commands, decrees, and instructions.” So Isaac stayed in Gerar.