Genesis 26:8–9

When he had been there a long time, Abimelech king of the Philistines looked out of a window and saw Isaac laughing with Rebekah his wife. So Abimelech called Isaac and said, “Behold, she is your wife. How then could you say, ‘She is my sister’?” Isaac said to him, “Because I thought, ‘Lest I die because of her.’ ”

When Isaac had been there a long time, Abimelek king of the Philistines looked down from a window and saw Isaac caressing his wife Rebekah. So Abimelek summoned Isaac and said, “She is really your wife! Why did you say, ‘She is my sister’?”

Isaac answered him, “Because I thought I might lose my life on account of her.”

But some time later, Abimelech, king of the Philistines, looked out his window and saw Isaac caressing Rebekah.

Immediately, Abimelech called for Isaac and exclaimed, “She is obviously your wife! Why did you say, ‘She is my sister’?”

“Because I was afraid someone would kill me to get her from me,” Isaac replied.

And it happened that, when he had been there a long time, Abimelech the king of the Philistines looked through the window, and saw—behold—Isaac was fondling Rebekah his wife. And Abimelech called Isaac and said, “Surely she is your wife. Now why did you say ‘She is my sister’?” And Isaac said to him, “Because I thought I would die on account of her.”

And it came to pass, when he had been there a long time, that Abimelech king of the Philistines looked out at a window, and saw, and, behold, Isaac was sporting with Rebekah his wife. 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 for her.