Paul had just finished talking about the folly of Christians being unequally yoked together with unbelievers in the previous verses. The question that I struggle with practically on a daily basis is what part of that command do we not understand. The language, the context, the application is all so very clear, and yet ignored by many.
You ever overhear other Christians talk? It's not like you are eavesdropping on them, but they are sitting so close or talking so loud that its inevitable that you hear, if not all, portions of their conversation. It happens a lot to me and I must confess that the content of some of these conversations leaves me baffled as to where they truly stand in their relationships with Christ.
For example, the movies that they watch, the people that they admire, their grossly oversimplified versions of profound truth. My grandmother used to ask, "If ignorance is so bliss, why aren't more people happy." Based on the conversations that I overhear throughout the day, there should be a whole lot of people happy in this world!