A.T. Robertson Commentary 1 Thessalonians 4:12

"that ye may walk becomingly toward them that are without, and may have need of nothing." — 1 Thessalonians 4:12 (ASV)

That ye may walk honestly (ινα περιπατητε ευσχημονως). Present subjunctive (linear action). Old adverb from ευσχημων (ευ, σχημα, Latin habitus, graceful figure), becomingly, decently. In N.T. only here and Ro 13:13. This idea includes honest financial transactions, but a good deal more. People outside the churches have a right to watch the conduct of professing Christians in business, domestic life, social life, politics.