Genesis 26:7-9

New Revised Standard Version, Anglicised Catholic Edition

⁷ When the men of the place asked him about his wife, he said, ‘She is my sister’; for he was afraid to say, ‘My wife,’ thinking, ‘or else the men of the place might kill me for the sake of Rebekah, because she is attractive in appearance.’ ⁸ When Isaac had been there a long time, King Abimelech of the Philistines looked out of a window and saw him fondling his wife Rebekah. ⁹ So Abimelech called for Isaac, and said, ‘So she is your wife! Why then did you say, “She is my sister”?’ Isaac said to him, ‘Because I thought I might die because of her.’