Genesis 20:9-13

20:9 Abimelech summoned Abraham and said to him, “What have you done to us? What sin did I commit against you that would cause you to bring such great guilt on me and my kingdom? You have done things to me that should not be done!” 20:10 Then Abimelech asked Abraham, “What prompted you to do this thing?”

20:11 Abraham replied, “Because I thought, ‘Surely no one fears God in this place. They will kill me because of my wife.’ 20:12 What’s more, she is indeed my sister, my father’s daughter, but not my mother’s daughter. She became my wife. 20:13 When God made me wander from my father’s house, I told her, ‘This is what you can do to show your loyalty to me: Every place we go, say about me, “He is my brother.”’”