Genesis 20:12

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.

Cross-references

Genesis 12:13 records the first time Abraham used this exact scheme. This is a direct repetition of his earlier deceptive plan.

Genesis 26:7 shows Isaac repeating his father Abraham's identical lie about his wife, demonstrating a learned pattern of fear and deception.

Genesis 11:29 names Sarai as Abram's wife and daughter of his father, explaining the half-truth Abraham tells here.