For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
I am dealing with someone who is repeating a sin his father engaged in, and unfortunately, he is also handling it the same way his father did, by denying what he's doing and refusing to repent, just as his father did. You can't help someone who won't even admit he is sinning!
When the father took away his veil of protection over the family, the spiritual forces were more easily able to attack the rest of the family, and the mother took away her secondary veil of protection by refusing to confront her husband's sin, and therefore enabled it, so the children all suffered as well. Pride, stubbornness, sexual addiction, deceit, all passed on within this family. Such a sad situation. Prayer is the only weapon left at this point.