Genesis 20:9-12

91Then Abimelech called Abraham and said to him, “What have you done to us? And 2how have I sinned against you, that you have brought on me and on my kingdom 3a great sin? You have done to me 4things that ought not to be done.”

10And Abimelech said to Abraham, “What have you 5encountered, that you have done this thing?”

11Abraham said, “Because I thought, surely there is no 6fear of God in this place, and 7they will kill me because of my wife.

12Besides, she actually is my sister, the daughter of my father, but not the daughter of my mother, and she became my wife;