John Chrysostom
This too is not insignificant: to greet them through letters is a sign of great love.
"The brethren who are with me greet you." But you said, "For I have no one like-minded, who will sincerely care for you." How then do you now say, "The brethren who are with me"?
Either he is speaking of the brethren who were with him, showing that none of them was like-minded, without referring to those who were in the city. And what need did they have to undertake apostolic labors?
Or else he does not refuse to call them also brethren.