Galatians 6:4

his own work--not merely his own opinion of himself. have rejoicing in himself alone--Translate, "Have his (matter for) glorying in regard to himself alone, and not in regard to another (namely, not in regard to his neighbor, by comparing himself with whom, he has fancied he has matter for boasting as that neighbor's superior)." Not that really a man by looking to "himself alone" is likely to find cause for glorying in himself. Nay, in Gal 6:5, he speaks of a "burden" or load, not of matter for glorying, as what really belongs to each man. But he refers to the idea those whom he censures had of themselves: they thought they had cause for "glorying" in themselves, but it all arose from unjust self-conceited comparison of themselves with others, instead of looking at home. The only true glorying, if glorying it is to be called, is in the testimony of a good conscience, glorying in the cross of Christ.

This chapter chiefly consists of two parts. In the former the apostle gives us several plain and practical directions, which more especially tend to instruct Christians in their duty to one another, and to promote the communion of saints in love (Gal 6:1-10). In the latter he revives the main design of the epistle, which was to fortify the Galatians against the arts of their judaizing teachers, and confirm them in the truth and liberty of the gospel, for which purpose he, I. Gives them the true character of these teachers, and shows them from what motives, and with what views, they acted (Gal 6:11-14). And, II. On the other hand he acquaints them with his own temper and behaviour. From both these they might easily see how little reason they had to slight him, and to fall in with them. And then he concludes the epistle with a solemn benediction.

6:4 Instead of regarding ourselves as better than others, we should examine our own work and ensure that we obey Christ in everything (cp. 1 Cor 3:12-15).