We instructed you that if anyone is unwilling to work, neither should that one eat. In his final message to the Thessalonian community, Paul reminds them to stay true to the tradition that had been handed down to them. It is by remaining faithful to the tradition that the community will flourish and become fruitful. For the tradition that Paul handed to them is holistic, that is, it concerns the entirety of their lives. It is a body of teaching that deals with the manner of true worship as well as life in the community (social life). The specific area of the teaching upon which St. Paul wanted them to be particularly alert concerned conducting oneself in the community: “Always act in an orderly manner.” 
While we would readily relate orderly conduct to moral issues, this is not what Paul is talking about. Instead, Paul is talking about living as a responsible member of a community. Membership in the  new way (Christianity) does not excuse one from participating in the affairs of the community. As a matter of fact, failure to live responsibly with others leads to an automatic expulsion from Christian fellowship. A Christian must not become a burden to others. A Christian must be able to toil and eke out his/her livelihood just like the rest. As those evangelized by Paul, they had a role model in how not to responsibly lead a Christian life.