Reading missional stuff is great… the Resurgence points out 6 ways in which we should go about engaging culture.
the plain fact is that the Bible does not explicitly address most cultural issues. It does not tell you who to vote for, which school to go to, what movies to watch, whether or not you should date, whether or not to abort your baby, or how to respond to cloning. Instead, the Bible offers theological principles which we can appropriate in order to form opinions and convictions about cultural issues… The problem, however, is that we often start with cultural assumptions about what is right, beautiful, and good and go to the Bible to prove them. Instead, we need to bring cultural questions about what is true, good, and beautiful to the Bible, reflect on them theologically and then prayerfully, and carefully form our opinions. Don’t begin with cultural convictions and end with biblical proof-texts; end with cultural wisdom by beginning with biblical-theological reflection. Start with the biblical text and reflect theologically on cultural issues. Move from Text to Theology to Culture, not the other way around.