Abimelech sent for Isaac and said, “So she is really your wife! How could you say, ‘She is my sister’?” Isaac replied, “Because I thought I might die on account of her.”
Jewish Publication Society of America Version (JPS1917) - Genesis 26:9 >And Abimelech called Isaac, and said: 'Behold, of a surety she is thy wife; and how saidst thou: She is my sister?' And Isaac said unto him: 'Because I said: Lest I die because of her.'