Warnings Against Unfaithfulness (2:15–17) “In the world, but not of it”—this is a phrase commonly used to characterize the Christian’s relationship to the world. And yet many and varied are the opinions about what constitutes “worldliness.” Many religious groups and denominations forbid, either explicitly or implicitly, certain behaviors. In some circles smoking is forbidden; some groups look down on drinking alcoholic beverages, dancing, rock music or attending movies. And yet in other groups,