Our expectation of the eschaton has changed over the millenia. How does Paul's advice fit our modern lives?
One school of thought is to think about what behavior and beliefs aid the work and continuity of the congregation. What are the minimum entrance requirements? What actions would lead to a person's being ejected from church membership? What actions not taken would? Does each member have to do some of the church work? What portion of income or wealth is a person required to contribute? And so on with questions that I'm supposing that very few church congregations consider.
Paul was concerned with how the church appeared to pagans. Are we worried about a modern-day equivalent to that? Paul criticized busybodies--what should today's church do to change the behavior and attitude of our busybodies?
Warning from Carl R. Halladay in Preaching through the Christian Year C:
In the wrong hands, this text can easily become a club used to beat those who are out of work, especially the long-term unemployed. Clearly, if we are idle and remain idle, for no good reason, we come under the censure of this text. Paul's example also serves as a worthwhile corrective to the 9-to-5 ministry. As we know, genuine ministry often involves us in round-the-clock work. People in need do not punch a clock. But perhaps one of the most important dimensions of this text is its insistence that we best prepare for the end time not by being idle but by working and earning our own living.