The Great Commentary of Cornelius à Lapide
2 Corinthians 10:17
But he that glorieth let him glory in the Lord. Let him glory in truth as before the Lord. Secondly, and better, to glory in the Lord is to glory with the glory given by the Lord, which alone commends a man, and vouches for him by the wonders which it works through him. This is the genuine meaning, for S. Paul contrasts glorying in one's self with glorying in the Lord. To glory in self is to commend self; to glory in the Lord is to be commanded by the Lord, and to glory in that commendation. Still it follows from this, thirdly, that he who truly glories should glory not in himself but in the Lord, by referring all that has been received to Him, whose gifts they are, by giving to Him all the glory, and directing everything to His praise and glory (Chrysostom).
By these words the Apostle shows where, when, and in what we should glory, and at the same time clears himself of all charge of ostentation and desire of vain-glory. He says implicitly: These great and fine things I say about myself, not because I wish to glory in myself, but because I wish to give the praise to the Lord, from whom I have received all my glory, and the ground of my glorying. Cf. 1 Corinthians 1:31, note.
Learn from this that true praise and glory come from God alone, and far excel all human glory; for, (1.) man's praise is but small and poor, men being but worms of earth; but God's glory is, as He is, boundless. (2.) Man's glory is outward and apparent only within it is empty and ready to vanish away; but God's glory is inward and substantial; hence it fills and satisfies the soul. (3.) Man's glory is untrustworthy, feigned, and hypocritical many laugh at you behind your back while praising you to your face; but God's glory is faithful and true. (4.) Man's glory is unstable, and, like a reed, is shaken by the slightest breath of rumour they who praise you to-day will rail at you to-morrow; but God's glory is stable and constant. (5.) Man's glory is short-lived: mortals to die to-morrow praise you, and your praise will die with them. Where now are the praises of Cæsar, Pompey, Augustus? They have passed away they are gone like smoke; but the praise of God is eternal. God will praise thee for ever before the angels and blessed ones, because thou didst despise the worlds glory, and sought for that true glory which lasts for ever with God. (6.) Man's glory is imperfect, maimed, and alloyed; a man is praised by some, blamed by others; as many men as there are, so many opinions and judgments are there. God's glory is entire and perfect, for whoever God praises is praised also by the inhabitants of heaven. (7.) Man's glory is erroneous and groundless. Men glorify the high-born, the rich, the powerful, even if they be villains, crime-stained, and tyrants. God's glory is most true and most certain, for He praises none but those endowed with virtue and true wisdom. Again, men glory in themselves, in their sagacity, virtue, fortitude all things of naught; and therefore they glory in what is false, in nothing, in what is not. God's glory is to glory in God, of whom is all good and from whom flow all things to us, and to say, "Not unto us, not unto us, 0 Lord, but unto Thy name give the praise." (8.) Man's glory stands in the mouth of them that praise, confers no benefit on thee, impresses on thee no good. Therefore it is not in thee, but in Him that glorifies thee; just as honour is not in him that is honoured, but in him that confers it. But God's glory is both in God and in thee, for it is efficacious and fruitful. God does not merely beatify thee in thy soul with the light of glory, and in thy body with glorious gifts, but He communicates to the Blessed His own very Divine and uncreated glory, to be possessed and enjoyed. Oh, blind and insensate children of Adam, by nature greedy of praise, created and born to glory! Why do ye not seek after glory instead of its smoke and shadows? Why strive for what is false and fallacious and leave the true? Why seek for glory where it is not? You seek it on earth: it is not there, but in heaven. You seek it among men: it dwells among the angels and before God. You seek it in time: it is found in eternity. Thou, then, 0 Lord, art my glory; Thou art the joy of my heart. In thee will I glory and exalt all the day long. For myself I will glory in nothing save my infirmities. Let Jews, let worldly men seek glory from one another. I will require that which is from God alone. All human glory, all worldly honour, all temporal heights, when compared with Thy eternal glory are but vanity, foolishness, and reproach. 0 my Truth, my Mercy, my Glory, my God, 0 Blessed Trinity, to Thee alone be praise, honour, and glory; to Thee alone be blessing, wisdom, and thanksgiving; to Thee, our God, be honour, virtue, and strength for ever and ever. Amen.