Behold, a King shall reign. He means that God will still be gracious to his Church, so as to restore her entirely; and the best method of restoring her is, when good government is maintained, and when the whole administration of it is conducted with propriety, and with good order. This prediction undoubtedly relates to Hezekiah and his reign, under which the Church was reformed and restored to its former splendor; for formerly it was in a wretched and ruinous condition. Ahaz, who was a wicked and disgraceful hypocrite, had corrupted everything according to his own wicked dispositions, and had overturned the whole condition of civil government and of religion. (2 Kings 16:2, 3.) He therefore promises another king, namely, Hezekiah, whose power and righteousness shall restore the state of affairs which is thus wretched and desperate. In a word, he presents to us in this passage a lively picture of the prosperous condition of the Church; and as this cannot be attained without Christ, this description undoubtedly refers to Christ, of whom Hezekiah was a type, and whose kingdom he foreshadowed. In righteousness and judgment. Here he follows the ordinary usage of Scripture, which employs those expressions to denote good government; for by righteousness is meant equity and good government, and by judgment is meant that part of equity which upholds good men, and defends them from the assaults of the wicked. It is undoubtedly true that the duty of a good prince embraces a wider extent than "righteousness and judgment;" for his great aim ought to be to defend the honor of God and religion. But the ordinary usage of Scripture is, to describe the whole observation of the law by the works of the second table; for, if we refrain from acts of injustice, if we aid, as far as lies in our power, those who are oppressed by others, and, in a word, if we maintain brotherly kindness, we give evidence of the fear of God, from which such fruits spring and grow. From a part, therefore, the Prophet has described the whole. And princes shall rule. It is not without good reason that he likewise mentions nobles; [1] for it would not be enough to be a good prince, if he were not supported by upright ministers and counselors. Frequently has the condition of the people, under good princes, been very bad; as we read of Nerva, [2] under whose reign every kind of conduct was tolerated, so that many persons were far less favourably situated under his reign than under Nero; for the carelessness and indolence of a single individual gave freedom of action to many wicked men. It is therefore necessary that a king shall have good governors, who shall supply the place of eyes and hands, and aid him in the righteous exercise of his authority. If this be not the case, a good king cannot advance a step without being more or less retarded by other men; and unless rulers move with a harmony resembling that which we find in musical instruments, the government of a state cannot be carried on with advantage. On this subject, men ought to listen to the advice of Jethro, Moses' father-in-law, to unite with him "able men fearing God, men of truth, and hating covetousness, and to appoint such men to be rulers of thousands, rulers of hundreds, rulers of fifties, and rulers of tens." (Exodus 18:21.) But at the present day, those who aid, or pander to their lusts, and who favor and flatter them, are promoted by kings to honors and high rank, which are bestowed on them as the just reward of their flattery or base servility. Nor ought we to wonder if we see, almost throughout the whole world, states thrown into confusion, ranks overturned, and all good government despised and set aside; for this is the just punishment of our iniquities, and we deserve to have such governors, since we do not allow God to rule over us. How shall this extraordinary kindness of God be enjoyed by men who are openly rebellious and profane, or by wicked hypocrites who cast God behind them, and cannot bear the yoke of Christ, through whom this prosperity and restoration of a declining Church is promised?

Footnotes

1 - In our Author's version, from which the heading of this paragraph is taken, he makes use of the word principes, which commonly means "rulers," but sometimes also (as in the phrases, "facile princeps, femina princeps,") denotes persons of high rank, or those who in any respect are highly distinguished. But here he employs the word proceres, "nobles;" and he does so evidently for the purpose of removing ambiguity, and of stating clearly that view which is contained in the conclusion of this sentence. -- Ed.

2 - The singular mildness of the Roman Emperor Nerva, which made him personally beloved, was carried to such an excess as to impair the efficiency of his government, and compelled him to resign the throne to the able and excellent Trajan. On the other hand, Nero, whose name cannot be mentioned without awakening the remberance of his monstrous cruelty, held the reins with a firmer hand, and prevented the repetition of many disorders which had been committed under the reign of his amiable predecessor Nerva. -- Ed

Behold, a king - That is, Hezekiah. That it refers to him is apparent from the connection. The reign of Ahaz had been one of oppression and idolatry. This was to be succeeded by the reign of one under whom the rights of the people would be secured, and under whom there would be a state of general prosperity. This may have been uttered while Ahaz was on the throne, or it may have been when Hezekiah began to reign. Perhaps the latter is the more probable, as Ahaz might not have tolerated anything that would have looked like a reflection on his own reign; nor, perhaps, while he was on the throne would Isaiah have given a description that would have been a contrast between his reign and that of his successor.
Shall reign in righteousness - That is, a righteous king shall reign; or his administration shall be one of justice, and strongly in contrast with that of his predecessor. This was certainly the general characteristic of the reign of Hezekiah.
And princes shall rule - Hebrew, 'For princes, or, 'as to princes' (לשׂרים les'ârı̂ym). Lowth proposes to read this without the ל (l), as the ancient versions do. But it is not necessary to change the text. It may be rendered, 'As to princes, they shall rule' (compare Psalm 16:3). The 'princes' here denote the various officers of government, or those to whom the administration was confided.
In judgment - That this is a just description of the reign of Hezekiah is apparent from the history, see 2-Kings 18:3-6 : 'He removed the high places, and broke the images, and cut down the grove. He trusted in the Lord God of Israel, so that after him was none like him among all the kings of Judah, nor any that were before him, for he clave unto the Lord, and departed not from following him.'

Behold, a king shall reign in righteousness - If King Hezekiah were a type of Christ, then this prophecy may refer to his time; but otherwise it seems to have Hezekiah primarily in view. It is evident, however, that in the fullest sense these words cannot be applied to any man; God alone can do all that is promised here.
And princes - ושרים ve-sarim, without ל lamed, to; so the ancient Versions. An ancient MS. has ושריו vesaraiv, and his princes.

Behold, (a) a king shall reign in righteousness, and princes shall (b) rule in judgment.
(a) This prophecy is of Hezekiah, who was a figure of Christ, and therefore it should chiefly be referred to him.
(b) By judgment and justice is meant an upright government, both in policy and religion.

Behold, a King shall reign in righteousness,.... Not Hezekiah, as the Jewish writers; at least only as a type, as some writers interpret it; rather Christ himself, who is "King" not only of the whole world, and of the kings of it in general, but in particular is King of saints; and who "reigns" now in and over his church and people, being set as King by his Father over his holy hill of Zion, and, being exalted at his right hand, is made and declared Lord and Christ; and where he does and will reign until all enemies are put under his feet, and ere long will reign gloriously before his ancients in Jerusalem, Isaiah 24:23 and his reign is "in righteousness"; in a righteous manner, according to the rules of justice and equity: all his laws are just; his ways and methods of administration are right; his sceptre is a sceptre of righteousness: righteousness is the girdle of his loins, and faithfulness the girdle of his reins:
and princes shall rule in judgment: the ministers of the Gospel, pastors of churches, who are set over them in the Lord, and have the rule over them; and who rule well, and in judgment, when they rule according to the word of God; when they preach the Gospel, and administer ordinances, and do all the business of Christ's house, according to the instructions, laws, and rules he has given.

Christ our righteous King, and his true disciples, are evidently here intended. The consolations and graces of his Spirit are as rivers of water in this dry land; and as the overhanging rock affords refreshing shade and shelter to the weary traveller in the desert, so his power, truth, and love, yield the believer the only real protection and refreshment in the weary land through which he journeys to heaven. Christ bore the storm himself, to keep it off from us. To him let the trembling sinner flee for refuge; for he alone can protect and refresh us in every trial. See what pains sinners take in sin; they labour at it, their hearts are intent upon it, and with art they work iniquity; but this is our comfort, that they can do no more mischief than God permits. Let us seek to have our hearts more freed from selfishness. The liberal soul devises liberal things concerning God, and desires that He will grant wisdom and prudence, the comforts of his presence, the influence of his Spirit, and in due time the enjoyment of his glory.

MESSIAH'S KINGDOM; DESOLATIONS, TO BE SUCCEEDED BY LASTING PEACE, THE SPIRIT HAVING BEEN POURED OUT. (Isaiah. 32:1-20)
king--not Hezekiah, who was already on the throne, whereas a future time is contemplated. If he be meant at all, it can only be as a type of Messiah the King, to whom alone the language is fully applicable (Hosea 3:5; Zac 9:9; see on Isaiah 11:3-5). The kingdom shall be transferred from the world kings, who have exercised their power against God, instead of for God, to the rightful King of kings (Ezekiel 21:27; Daniel 7:13-14).
princes--subordinate; referring to all in authority under Christ in the coming kingdom on earth, for example, the apostles, &c. (Luke 22:30; 1-Corinthians 6:2; 2-Timothy 2:12; Revelation 2:26-27; Revelation 3:21).

For Judah, sifted, delivered, and purified, there now begins a new ear. Righteous government, as a blessing for the people, is the first beneficent fruit. "Behold, the king will reign according to righteousness; and the princes, according to right will they command. And every one will be like a shelter from the wind, and a covert from the storm; like water-brooks in a dry place, like the shadow of a gigantic rock in a languishing land." The kingdom of Asshur is for ever destroyed; but the kingdom of Judah rises out of the state of confusion into which it has fallen through its God - forgetting policy and disregard of justice. King and princes now rule according to the standards that have been divinely appointed and revealed. The Lamed in ūlesârı̄m (and the princes) is that of reference (quod attinet ad, as in Psalm 16:3 and Ecclesiastes 9:4), the exponent of the usual casus abs. (Ges. 146, 2); and the two other Lameds are equivalent to κατά, secundum (as in Jeremiah 30:11). The figures in Isaiah 32:2 are the same as in Isaiah 25:4. The rock of Asshur (i.e., Sennacherib) has departed, and the princes of Asshur have deserted their standards, merely to save themselves. The king and princes of Judah are now the defence of their nation, and overshadow it like colossal walls of rock. This is the first fruit of the blessing.

Behold - This seems to be a distinct prophecy from the former, and delivered before that which is related in the former chapters. The prophecies are not always set down in that order, in which the prophets delivered them. The foregoing prophecy was delivered, not in the time of Ahaz for he sent to the Assyrian, not the Egyptian, for help; it was Hezekiah, who rebelled against the king of Assyria, and was too prone to trust upon the staff of Egypt. But this seems to have been delivered in the time of Ahaz. A king - Hezekiah, a type of Christ, and Christ typified by him.