Leviticus 20:17 If there is a man who takes his sister, his father's daughter or his mother's daughter, so that he sees her nakedness and she sees his nakedness, it is a disgrace; and they shall be cut off in the sight of the sons of their people. He has uncovered his sister's nakedness; he bears his guilt.

Judges 19:23 Then the man, the owner of the house, went out to them and said to them, "No, my fellows, please do not act so wickedly; since this man has come into my house, do not commit this act of folly.

Judges 20:6 "And I took hold of my concubine and cut her in pieces and sent her throughout the land of Israel's inheritance; for they have committed a lewd and disgraceful act in Israel. (NASB ©1995)