Genesis 26:8-10

When he had been there a long time, King Abimelech of the Philistines looked out of his window and saw Isaac caressing his wife Rebekah. Abimelech called for Isaac and said, “So she’s really your wife! How could you say, ‘She’s my sister’?” Isaac answered him, “I thought I would be killed because of her.” Then Abimelech said, “What have you done to us! One of the people might have easily gone to bed with your wife, and then you would have made us guilty of sin.”