Genesis 20:12-13

Darby Translation

¹² But she is also truly my sister, the daughter of my father, but not the daughter of my mother; and she became my wife.

¹³ And it came to pass when God caused me to wander from my father's house, that I said to her, Let this be thy kindness which thou shalt shew to me: at every place whither we shall come, say of me, He is my brother.