Why is the Bible so specific about family sexual relations?


“‘Do not dishonor your father by having sexual relations with your mother. She is your mother; do not have relations with her.
“‘Do not have sexual relations with your father’s wife; that would dishonor your father.
“‘Do not have sexual relations with your sister, either your father’s daughter or your mother’s daughter, whether she was born in the same home or elsewhere.
“‘Do not have sexual relations with your son’s daughter or your daughter’s daughter; that would dishonor you.
“‘Do not have sexual relations with the daughter of your father’s wife, born to your father; she is your sister.”  Leviticus 18:7-11
            The thought of some of these sexual relations disgusts us, but these things do happen—then and today.  Have you watched “Jerry Springer”?
            God wanted to be clear about what he meant by inappropriate sexual activity outside of the marriage of a man and a woman.  There’s no room for “Yeah, but…”  The repetition and specificity points directly at no, no, no, no, no, no!  It also shows that family lines, not just blood lines, are off limits.  The daughter of a father’s wife means stepchildren could not marry (that means you, Greg and Marcia Brady).
            God wanted to be clear so he exposed all the possibilities, leaving little room for doubt.