Genesis 20:1-3

Now Abraham moved on from there into the region of the Negev and lived between Kadesh and Shur. For a while he stayed in Gerar, and there Abraham said of his wife Sarah, “She is my sister.” Then Abimelek king of Gerar sent for Sarah and took her. But God came to Abimelek in a dream one night and said to him, “You are as good as dead because of the woman you have taken; she is a married woman.”