Genesis 20

2. Now Abraham said of Sarah his wife, "She is my sister."  And Abimelech king of Gerar sent and took Sarah.  (Gen. 12:11 - 13;   Gen. 26:7;   Prov. 29:25)
11. And Abraham said, "Becaues I thought, surely the fear of God is not in this place; and they will kill me on account of my wife.  (Gen. 12:12)