Genesis Chapter 20

20:3-5

But God came to Abimelech in a dream by night, and said to him, Behold, thou art but a dead man, for the woman which thou hast taken; for she is a man's wife.
But Abimelech had not come near her: and he said, Lord, wilt thou slay also a righteous nation?
Said he not unto me, She is my sister? and she, even she herself said, He is my brother: in the integrity of my heart and innocency of my hands have I done this.

20:12

And yet indeed she is my sister; she is the daughter of my father, but not the daughter of my mother; and she became my wife.

20:16

And unto Sarah he said, Behold, I have given thy brother a thousand pieces of silver: behold, he is to thee a covering of the eyes, unto all that are with thee, and with all other: thus she was reproved.

20:18

For the Lord had fast closed up all the wombs of the house of Abimelech, because of Sarah Abraham's wife.