Therefore Christians are obliged to appear visibly as an example for the life of all who stand outside, to be lights for them. "Let your light so shine before men, that they may see your good works and glorify your Father who is in heaven," the Lord commanded all Christians in the person of the Apostles (Mt 5:16).
For the Apostle, a seemly walk before outsiders is defined by all the rules he has just given. Here he seems to gather them all into one, adding, "and that you may need nothing."
This means that they should ask nothing from anyone and trouble no one with their needs. "The Apostle interpreted the words, 'that you may walk seemly toward outsiders,' by adding, 'and that you may need nothing.'
"It is shameful, he says, to live in inactivity, not to procure what is needed by one's own labor, but to love a beggarly life and await the generosity of others" (Theodoret).
St John Chrysostom writes, "He did not say, 'Do not shame yourselves by begging.' Yet he hinted at this, though he used a condescending form of expression.
"He did this both to make them feel how improper it is and not to grieve them too much. For if our brethren are scandalized by such people, then outsiders are much more scandalized.
"They search out a thousand accusations and reproaches when they see a healthy man, able to support himself, asking for alms and needing the help of others.
"For by this the name of God is blasphemed (Rom 2:24). But he did not display anything of this kind openly, only what could especially touch them, namely disorderliness."