Genesis 26:1-9

There was a famine in the land, as bad as the famine during the time of Abraham. And Isaac went down to Abimelech, king of the Philistines, in Gerar. GOD appeared to him and said, “Don’t go down to Egypt; stay where I tell you. Stay here in this land and I’ll be with you and bless you. I’m giving you and your children all these lands, fulfilling the oath that I swore to your father Abraham. I’ll make your descendants as many as the stars in the sky and give them all these lands. All the nations of the Earth will get a blessing for themselves through your descendants. And why? Because Abraham obeyed my summons and kept my charge—my commands, my guidelines, my teachings.” So Isaac stayed put in Gerar. The men of the place questioned him about his wife. He said, “She’s my sister.” He was afraid to say “She’s my wife.” He was thinking, “These men might kill me to get Rebekah, she’s so beautiful.” One day, after they had been there quite a long time, Abimelech, king of the Philistines, looked out his window and saw Isaac fondling his wife Rebekah. Abimelech sent for Isaac and said, “So, she’s your wife. Why did you tell us ‘She’s my sister’?” Isaac said, “Because I thought I might get killed by someone who wanted her.”