Then Abimelech called Isaac and said, 'Behold, certainly she is your wife! How then did you say, 'She is my sister'?' And Isaac said to him, 'Because I said, 'I might die on account of her.''
(New American Standard Bible)
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.
(King James Version)