What we may not depend upon in a day of distress: Let not the wise man glory in his wisdom, as if with the help of that he could outwit or countermine the enemy, or in the greatest extremity find out some evasion or other; for a man's wisdom may fail him when he needs it most, and he may be taken in his own craftiness. Ahithophel was befooled, and counsellors are often led away spoiled.
But, if a man's policies fail him, yet surely he may gain his point by might and dint of courage. No: Let not the strong man glory in his strength, for the battle is not always to the strong. David the stripling proves too hard for Goliath the giant. All human force is nothing without God, worse than nothing against him.
But may not the rich man's wealth be his strong city? (money answers all things) No: Let not the rich man glory in his riches, for they may prove so far from sheltering him that they may expose him and make him the fairer mark. Let not the people boast of the wise men, and mighty men, and rich men that they have among them, as if they could make their part good against the Chaldeans because they have wise men to advise concerning the war, mighty men to fight their battles, and rich men to bear the charges of the war.
Let not particular persons think to escape the common calamity by their wisdom, might, or money; for all these will prove but vain things for safety.
Those that refused to know God (Jer_9:6) will boast in vain of their wisdom and wealth; but those that know God, intelligently, that understand aright that he is the Lord, that have not only right apprehensions concerning his nature, and attributes, and relations to man, but receive and retain the impressions of them, may glory in this it will be their rejoicing in the day of evil. We may glory in this, that, wherever we are, we have an acquaintance with an interest in a God that exercises lovingkindness, and judgment, and righteousness in the earth, that is not only just to all his creatures and will do no wrong to any of them, but kind to all his children and will protect them and provide for them.
For in these things I delight. God delights to show kindness and to execute judgment himself, and is pleased with those who herein are followers of him as dear children. Those that have such knowledge of the glory of God as to be changed into the same image, and to partake of his holiness, find it to be their perfection and glory; and the God they thus faithfully conform to they may cheerfully confide in, in their greatest straits. But the prophet intimates that the generality of this people took no care about this. Their wisdom, and might, and riches, were their joy and hope, which would end in grief and despair. But those few among them that had the knowledge of God might please themselves with it, and boast themselves of it; it would stand them in better stead than thousands of gold and silver. ~ Matthew Henry
'that he understandeth and knoweth me'; or, "in understanding and knowing me" (g); or, "he understanding and knowing me"; for this clause is descriptive of the person that is to glory in the Lord, and not of the thing in which he is to glory; for it is not even in the knowledge of God that men are to glory, but in the Lord himself; and he that understands himself as a creature dependent on God, and especially as a fallen sinful creature; and still more as one regenerated by the grace of God; he will never glory in himself, but in the Lord; and so, if he understands divine things, and the scheme of salvation by the grace of God, and not by the works of men; and if he knows the Lord, he will never glory in his own wisdom, nor in his own strength, nor in his riches, nor in his righteousness, nor in any man or creature, but in the Lord only; and particularly in what follows:
'that I am the Lord, which exercise lovingkindness'; in such various instances; in election, redemption, effectual calling, the pardon of sin, justification, adoption, and eternal life; and towards persons so very undeserving of any favour; and to have an interest in this exceeds all things else; it is better than life, and all the enjoyments of it:
judgment; exercising it on Christ, sin being laid, found, and condemned on him; and through Christ protecting and defending his people; and by Christ at the last day:
and righteousness in the earth; wrought by Christ here on earth in our nature, and imputed to his people in their present state, whereby they have a right to eternal glory:
for in these things I delight, saith the Lord; in showing mercy, grace, and favour, to miserable and undeserving men; in making his Son an offering for sin, and bruising him; and in his righteousness, whereby the law is magnified and made honourable. ~ John Gill
What are you trusting in this day?