- But let every man prove his own work, and then shall he have rejoicing (τo καύχημα) in himself alone, and not in another (Galatians 6:4). The Apostle is saying: “Let every man scrutinize (this is the meaning of prove) his own deeds, to determine if he acted out of vainglory, hypocrisy, or some other human failing. If he ﬁnds himself innocent of such sins, may he not boast and look down on others. But if he cannot restrain himself and humble his thoughts, let him at least conﬁne his boasting (τo καύχημα) to himself alone.” This means, let him compare his own progress from day to day, striving to make today’s deeds better than yesterday’s, and let him exult in doing good work. Paul instructs the Galatians in this manner, not as a commandment, but as a temporary condescension to their weakness. Thus, step by step, they will learn to cut off their pride altogether. He who has learned to refrain from boasting like the Pharisee in front of his neighbor, will soon learn to desist from boasting altogether.
Blessed Theophylact of Ochrid, Explanation of the Epistle of St. Paul to the Galatians