Genesis 20:3-5

3But that night God came to Abimelech in a dream and told him, “You are a dead man, for that woman you have taken is already married!”

4But Abimelech had not slept with her yet, so he said, “Lord, will you destroy an innocent nation?

5Didn’t Abraham tell me, ‘She is my sister’? And she herself said, ‘Yes, he is my brother.’ I acted in complete innocence! My hands are clean.”