But Jehovah of hosts shall be exalted in judgment. He expresses the manner, or, as it is commonly called, the formal cause, of the excellence of which he has spoken; as if he had said, "The God of hosts, whom ungodly men insolently tread under their feet, will be raised on high, when he shall show himself to be the judge of the world." In this manner he ridicules the foolish confidence with which the ungodly vaunted; for if judgment and righteousness must at length come forth, it follows that they shall be cast down, since the only way in which those men rise is by overturning the order of nature. And it ought to be carefully observed, that it is not more possible for wicked men to continue in prosperity than for God to permit his glory to be set aside. Though judgment is not at all different from righteousness, still the repetition is not superfluous. And God, who is holy, shall be sanctified in righteousness. The language becomes more vehement, that wicked men may not, by a false imagination, assure themselves of uninterrupted happiness, which they cannot have, unless by setting aside the holiness of God. But since God is holy by nature, he must be sanctified. Hence it follows that destruction hangs over the wicked, that their obstinacy and rebellion may be subdued, for God cannot deny himself.

But the Lord of hosts shall be exalted in judgment,.... By the "Lord of hosts" is meant Christ, the Lord of the armies, and of the inhabitants of the earth, of angels, and of men; who, though in our nature, in his state of humiliation, was brought very low, yet is now highly exalted; and which exaltation of his is seen and known, as it is here foretold it should be, by his judgments inflicted on the Jewish nation, for their contempt and rejection of him; see Psalm 9:16 so Kimchi interprets judgment of the judgment which the Lord would inflict on the ungodly of Israel: thus Christ's exaltation is seen in their humiliation, and his kingdom and power in their destruction:
and God that is holy; Christ is truly and properly God, God over all, blessed for ever; and he is holy, both as God and man; as God he is essentially and perfectly holy; and, as man, without sin original or actual; he is the Holy One of God, and the Holy One of Israel; and of him it is said, he
shall be sanctified in righteousness, or be declared to be holy; by the obedience and righteousness of his life, wrought out for his people, whereby he becomes their sanctification and righteousness; and by his justice, in punishing his and his people's enemies. Were all this to be understood of Jehovah the Father, it might very well be interpreted, as it is by Cocceius, of his being exalted and honoured by the condemnation of sin in the flesh of Christ; and of his being "glorified", as the Arabic version renders it, by the obedience and righteousness of his son, whereby his justice is satisfied, and his law magnified, and made honourable; and by the faith of his people, laying hold on that righteousness, and receiving it to the glory of God; in all which the purity, holiness, and justice of God appears.

God shall be "exalted" in man's view, because of His manifestation of His "justice" in punishing the guilty.
sanctified--regarded as holy by reason of His "righteous" dealings.

Exalted - By the execution of this just judgment. Sanctified - Shall appear to be an holy God, by his righteous judgments.