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 for her.
Cross-references
Genesis 12:18
Parallel
Genesis 12:18 shows Pharaoh confronting Abram with the same rebuke — 'Why say she's my sister?' — the original wife-sister deception exposed.