Jeremiah 9:23,24 - Joseph Benson’s Commentary on the Old and New Testaments

Let not the wise man glory in his wisdom Let not men value themselves on account of their wisdom, strength, or riches, which are things in themselves of a very uncertain continuance, and such calamities are coming, (see Jeremiah 9:25-26,) in which they will stand the owners of them in very little stead. The only true, valuable endowment is the knowledge of God, not as he is in himself, which is too high an attainment for poor mortals to pretend to, but with respect to his dealings with men; to have a serious sense of his mercies to the penitent, of his judgments to the obstinate, and of his truth and integrity, in making good his promises and threatenings to both. It is in the exercise of these attributes God chiefly delights; and it is by these he desires to make himself known to the world; and he that forms a just and lively apprehension of God, chiefly with regard to these his perfections, will always demean himself suitably toward him. Judgment and righteousness are often equivalent terms, but here the former seems to denote God's severity against the wicked, and the latter his truth, justice, or holiness. See Lowth. Upon the whole, all other wisdom is vain and dangerous, except that which has God himself for its object, and teaches us to despise ourselves, to be humbled beneath his mighty hand, and to glory in him alone.