On the one hand, Ephesians 4.17-5.21 has been interpreted as drawing a social or ethical contrast between the addressees and the outside world, and even as encouraging or legitimating social withdrawal or separation from outsiders. On the other hand, the household code in Ephesians 5.21-6.9 has been read as encouraging integration into the wider society. These social goals seem to be at odds, but rarely is this reflected on or addressed in scholarship. Upon a close and detailed study that utilizes traditional exegetical methods, comparative analysis and social identity theory, Daniel K. Darko argues that Ephesians 4.17-6.9 exhibits a consistent strategy of promoting group distinctiveness while utilizing Greco-Roman ethical values and traditions to promote internal cohesion among the readers. Readers are encouraged neither to separate from society nor to integrate further into it, but to live and function within society as members of the 'household of God' in one accord. "This is a very insightful study based upon careful analysis of the social convention of the Greco-Roman world and a strong reflection on the theology of Ephesians... [Darko] asks the pertinent question: can the values promoted in the letter be normative Christian virutes for all cultures? That question remains, but at least Darko has put the exegetical basis for an answer on a firmer foundation." Journal for the Study of the New Testament Booklist 2009