(18) For not he that commendeth himself is approved.--Again, as in 2Corinthians 10:12 and five earlier passages (see reference there), we trace the impression which the stinging taunt had left on St. Paul's mind. In the word "approved" there is possibly a reference to what had been said in 1Corinthians 11:19. He had meant something more by it than meeting with men's approval.

Verse 18. - But whom the Lord commendeth (comp. 1 Corinthians 3:13, 14; 1 Corinthians 4:5; Proverbs 27:2).

10:12-18 If we would compare ourselves with others who excel us, this would be a good method to keep us humble. The apostle fixes a good rule for his conduct; namely, not to boast of things without his measure, which was the measure God had distributed to him. There is not a more fruitful source of error, than to judge of persons and opinions by our own prejudices. How common is it for persons to judge of their own religious character, by the opinions and maxims of the world around them! But how different is the rule of God's word! And of all flattery, self-flattery is the worst. Therefore, instead of praising ourselves, we should strive to approve ourselves to God. In a word, let us glory in the Lord our salvation, and in all other things only as evidences of his love, or means of promoting his glory. Instead of praising ourselves, or seeking the praise of men, let us desire that honour which cometh from God only.For not he that commendeth himself is approved,.... Such may be said to commend themselves, who ascribe that to themselves, which do not belong to them; as that they are the ministers of Christ, and sent forth by him, when they are not; who boast that they have large ministerial gifts, when they have none; and of their great service and usefulness, when it is all the produce of other men's labours; and what they have and do, they wholly impute to their own power and industry, and not to the grace and power of God: now such persons are neither approved by God, nor good men; for their own self-commendation stands for nothing, and is so far from being acceptable to God or men, that it must be nauseous and disagreeable; see Proverbs 27:2.

But whom the Lord commendeth: they are approved by God and men, and they are such whom he highly honours, as he did Paul, by counting them faithful; and putting them into the ministry, by qualifying them for his service, by assisting them in it, and making them abundantly useful for the good of souls, and the glory of his name: by all which he bears a testimony to them, and shows his approbation of them, and at last will say, well done, good and faithful servant, enter into the joy of thy Lord.