Genesis 20:2-4

20:2 Abraham said about his wife Sarah, “She is my sister.” So Abimelech, king of Gerar, sent for Sarah and took her.

20:3 But God appeared to Abimelech in a dream at night and said to him, “You are as good as dead because of the woman you have taken, for she is someone else’s wife.”

20:4 Now Abimelech had not gone near her. He said, “Lord, would you really slaughter an innocent nation?