But as for you, brothers, do not grow weary in well-doing.
13 And you, brethren. Ambrose is of opinion that this is added lest the rich should, in a niggardly spirit, refuse to lend their aid to the poor, because he had exhorted them to eat every one his own bread. And, unquestionably, we see how many are unbefittingly ingenious in catching at a pretext for inhumanity.
The apostle having commended their obedience for the time past, and mentioned his confidence in their obedience for the time to come, proceeds to give them commands and directions to some who were faulty, correcting some things that were amiss among them. Observe, The best society of Christians may have some faulty persons among them, and some things that ought to be reformed.
Commenting on 2 Thessalonians 3:6-15
But ye, brethren,.... The rest of the members of the church, who were diligent and industrious in their callings, minded their own business, and did not trouble themselves with other men's matters, took care of themselves, and their families, and were beneficent to others: be not weary in well doing; which may be understood generally of all well doing, or of doing of every good...