Abraham Tells Avimelech That Sarah Bears No Guilt

"And she became my wife" (Genesis 20:12). And since you did not ask me whether she is my sister, the daughter of my father or the daughter of my mother, [but rather] you yourself took her in marriage — from this you learn that she is not my wife. And as for what you said, that she is my sister, she too said so; do not place guilt upon her.