Genesis 20:1-3

1Then Abraham journeyed from there to the land of the Negev and settled between Kadesh and Shur. While he was dwelling as an outsider in Gerar,

2Abraham said of Sarah his wife, “She is my sister.” So King Abimelech of Gerar sent for and took Sarah.

3But God came to Abimelech in a dream at night and said to him, “Behold, you are as good as dead, because of the woman whom you have taken—since she is a married woman.”