Genesis 20:12 in the King James Version
And yet indeed she is my sister; she is the daughter of my father, but not the daughter of my mother; and she became my wife.
Context
11 Abraham said, “Because I thought, ‘Surely the fear of God is not in this place. They will kill me for my wife’s sake.’
12 Besides, she is indeed my sister, the daughter of my father, but not the daughter of my mother; and she became my wife.
13 When God caused me to wander from my father’s house, I said to her, ‘This is your kindness which you shall show to me. Everywhere that we go, say of me, “He is my brother.”’”