“For even when we were with you, this we commanded you, that if any would not work, neither should he eat. For we hear that there are some which walk among you disorderly, working not at all, but are busybodies. Now them that are such we command and exhort by our Lord Jesus Christ, that with quietness they work, and eat their own bread. But ye, brethren, be not weary in well doing. And if any man obey not our word by this epistle, note that man, and have no company with him, that he may be ashamed. Yet count him not as an enemy, but admonish him as a brother.” 2 Thessalonians 3:10-15 (KJB)
Verse ten is a strong statement that many need to be reminded of. This is a commandment, not a request. Paul had no desire to be associated with the socially elite of his day in Thessalonica, or any other city. They despised work; and the slaves who did their work for them. There were also those; in the Church at Thessalonica; who had quit their jobs, or sold their business because of the false teaching that had gone on among them; that Jesus had revealed His coming day, that there was no more point in working; and now were totally dependent upon the Church for support.
Those who do not work are some of the disorderly. This is of course speaking of able-bodied people who can work but will not do so. They are meddlesome, mischievous rascals who need to be dealt with for the good of the Church, and for their own well being.
If any will not hear the Word, we are told “Not to keep company” with them so that they will be shamed. He is speaking of saved people, because he says, “Do not count him as an enemy, but… as a brother.”