Galatians 6:4

“But let every man prove his own work, etc..] Not concern himself about the actions and works of others; let him review his own heart and actions; let him examine, try, and prove his whole conduct in life by the rule of God's word, when he will find enough at home, without bearing hard upon, and censuring others: and then shall he have rejoicing in himself alone, and not in another; which is either ironically said, he will then see what reason he has to rejoice and glory in his own works, and vaunt over others, and to boast of his performances, and despise others; so far from it, that he will have reason to be ashamed of himself, and to own and acknowledge his unworthiness and…”

“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…”

“But let every man prove - That is, try or examine in a proper manner. Let him form a proper estimate of what is due to himself, according to his real character. Let him compare himself with the word of God, and the infallible rule which he has given, and by which we are to be judged in the last great day; compare the Romans 12:3 note; 1 Corinthians 11:28 note; 2 Corinthians 13:5 note. His own work - What he does. Let him form a fair and impartial estimate of his own character. And then shall he have rejoicing - That is, he will be appropriately rewarded, and will meet with no disappointment. The man who forms an improper estimate of his own character will be sure to be disappointed. The man…”

“But let every man try his own work - Narrowly examine all he is, and all he doeth. And then he shall have rejoicing in himself - He will find in himself matter of rejoicing, if his works are right before God. And not in another - Not in glorying over others. Galatians 6:5”

“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).”

“prove: Job 13:15 \*marg. Psa 26:2; Co1 11:28; Co2 13:5 rejoicing: Pro 14:14; Co1 4:3, Co1 4:4; Co2 1:12; Jo1 3:19-22 and not: Gal 6:13; Luk 18:11; Co1 1:12, Co1 1:13, Co1 3:21-23, Co1 4:6, Co1 4:7; Co2 11:12, Co2 11:13 Galatians 6:5”