Genesis 20:1-8

From there Abraham traveled to the region of the Negev and settled between Kadesh and Shur. While he was staying in Gerar, Abraham said about his wife Sarah, “She is my sister.” So King Abimelech of Gerar had Sarah brought to him. But God came to Abimelech in a dream by night and said to him, “You are about to die because of the woman you have taken, for she is a married woman.” Now Abimelech had not approached her, so he said, “Lord, would you destroy a nation even though it is innocent? Didn’t he himself say to me, ‘She is my sister’? And she herself said, ‘He is my brother.’ I did this with a clear conscience and clean hands.” Then God said to him in the dream, “Yes, I know that you did this with a clear conscience. I have also kept you from sinning against me. Therefore I have not let you touch her. Now return the man’s wife, for he is a prophet, and he will pray for you and you will live. But if you do not return her, know that you will certainly die, you and all who are yours.” Early in the morning Abimelech got up, called all his servants together, and personally told them all these things, and the men were terrified.