Adultery is generally defined as extramarital sex that is or was considered objectionable on social, religious and moral grounds, and which often resulted in legal consequences. Although the sexual activities that can be described as adultery vary, as well as their consequences, the concept is found in many cultures and shares similarities in Judaism, Christianity and Islam. Adultery was and continues to be viewed by many societies as offensive to public morals, and as undermining the "marital" relationship.