In the book of Exodus of the Hebrew Bible (the Old Testament in Christianity), at Chapter 20, it recites the Ten Commandments given to Moses to bring to his people. The Seventh Commandment’s list of sins contains the strict instruction—in no uncertain terms and without equivocation or ambiguity—that “thou shalt not commit adultery.”

Throughout both human and religious history, adultery has had many consequences, oftentimes resulting in an extraordinary level of violence against the adulterer such as murder by stoning, bodily mutilation, flogging, etc. Even in today’s so-called “modern World” honor killings occur in some cultures (see, Wikipedia, Adultery.)