Genesis 20:10-12

King James Version

¹⁰ And Abimelech said unto Abraham, What sawest thou, that thou hast done this thing?

¹¹ And Abraham said, Because I thought, Surely the fear of God is not in this place; and they will slay me for my wife's sake.

¹² 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.