If any man doesn't obey our word in this letter, note that man, that you have no company with him, to the end that he may be ashamed.
and have no company with him: The phrase "have no company with" is from the same Greek word (sunanamignumi), meaning "to mix up together;...to keep company with, be intimate with" (Thayer 601-1-4874). This word is used only three times in the New Testament and has direct reference to enforcement of Church Discipline each time (1 Corinthians 5:9; 1 Corinthians 5:11; 2 Thessalonians 3:14).