You shall not commit adultery. It is said that a preacher must capture the attention of his hearers within the first thirty seconds of his message.
Sex is a topic that attracts a lot of attention, and rightly so.
Sex is important. Sex is one thing that impacts all of our lives, either for good or for ill. All of us have given sex much thought, and all of us have to deal with sex at some time or another. The church has had much to say about sex throughout history. Some of what the church has said has been good.