Genesis 26:8-11

8Now after he had been there for a long time, King Abimelech of the Philistines peered down through the window and saw, behold, Isaac caressing his wife Rebekah.

9So Abimelech called Isaac and said, “So in fact she’s your wife! Now how could you say, ‘She’s my sister’?” Isaac said to him, “Because I said, ‘Or else I might die because of her.’”

10Then Abimelech said, “What is it that you’ve done to us? One of the people could have easily slept with your wife and you would’ve brought guilt on us.”

11So Abimelech commanded all the people saying, “Whoever touches this man or his wife will surely die!”