Matthew Poole and continuators on 2 Corinthians 10:18

18 For, not he that commendeth himself, is approved, but whom the Lord commendeth .

Solomon, Prov. 27.2. saith, Let another man praise thee, and not thine own mouth; a stranger, and not thy own lips. Self-commendation is an ungrateful sound to ingenuous ears; no man thinks another a jot the better for his commending himself, but always hath the worser opinion of him for such boasting; but this Text speaketh of an higher approbation, viz. from God. No man is approved of God for his speaking well of himself; the business is, who they are who approve themselves in the work which God hath committed to them; to whom the Lord will say, Well done, good and faithful servants: to whom the Apostle refers both himself, and those who magnified themselves, but vilified him.

Marginal references: Rom. 2.29. 1 Cor. 4.5.