Have you said something and immediately thought, "That sounded just like my parents"? We have those moments because to some degree, we're all products of our environments (our parents, schools, communities, etc.). The cultural environment of the Ephesus region was one dominated by all kinds of sexual behavior and speech that led to all kinds of dysfunction in life with God and others. In this section of Ephesians, Paul urges followers of Christ to "live as children of light" and to make a clean break with the darkness that once defined us because now it's God who defines us and gives us power to live like Father, like Son.