Why did he not name them directly? Surely they were guilty of what the Apostle speaks against. Therefore, to soften the rebuke, he speaks generally. Perhaps others also, besides those who presided, had become faulty in the same matter. These were persons who stood out from the rest. Saint Paul brings them all under one general view. At the same time, the instructions themselves are of such a kind that, in some aspects, they could apply to all Christians in general.
The Apostle says to the more perfect and guiding ones: do not be vainglorious (cf. Gal 5:26). Be attentive to the needs of the fallen and the weak (cf. Gal 6:1-2). Do not trumpet before yourselves, thinking yourselves to be something (cf. Gal 6:3-5).
People seek vain glory when they think to glory in what cannot give true glory. They also do so when they try to catch glory and praise from those whose praise and glorification are worthless. Such are all men in general. Those who suffer from this weakness are usually man-pleasers. They are unwilling to provoke anyone intentionally.
Yet their very striving to make people trumpet about them, especially when they succeed, provokes envy in others against their will. It also irritates others against them. Likewise they themselves envy anyone who gets ahead of them in this empty business, and they redouble their efforts.
This rivalry, in word and deed, creates lack of peace among those contending. From them it passes to those connected with them. The brotherly bond is broken, and the community is threatened with dissolution. Saint Chrysostom says: "In vainglory lies hidden the cause of many evils. From it envy is born, and from envy come countless kinds of evil."
Such is the general thought of the text. But if we take into account the circumstances in which the Epistle was written, it receives a special shade of meaning. Some of our interpreters give it this shade. Blessed Theodoret writes: "Perhaps those who were firm in the faith, continually condemning those who had wavered, stirred up disputes. The Apostle exhorts them to extend a hand to those who were inclining toward the Law."
Blessed Augustine understands this passage in a similar way. "After he taught them how to resist those who deceitfully wished to subject them to the bondage of the Law, he warns them. Having become more knowledgeable, and already having strength to answer the reproaches of fleshly men as they ought, they must not fall into useless contentiousness from vainglory alone. Having been freed from the yoke of the Law, they must not become slaves of vainglorious desires."
One dwells on these thoughts all the more willingly because the word "provoking" in Greek is προκαλουμενοι, meaning "challenging." Blessed Theophylact explains it thus: "challenging one another to disputes and contests. This happens, for example, when someone says to his opponent, Come now, let us measure ourselves, if you have that much strength."
Perhaps such an error had already been made when division of mind entered the Christian community. Those on whom lay the duty of guarding the faith of the believers looked down on those being carried away. In defending the truth, they were guided not by love for it and for the brethren being scandalized. Rather, they were guided by envy toward the false teachers, who supposedly seized their glory and dignity.
For this reason, perhaps, they labored in the struggle but had no fruit. On the contrary, they only inflamed irritation and increased the discord. Something of this sort occurred. The holy Apostle had to mention it, and he does mention it. Yet, fearing that touching this wound might be too painful, he places even himself among those being instructed. He speaks as though he himself needed such a lesson: "Let us not become vainglorious," and so on.