O if even thou hadst known! The discourse is pathetic, and therefore abrupt; for we know that by those who are under the influence of vehement passion their feelings are not more than half-expressed. Besides, two feelings are here mingled; for not only does Christ bewail the destruction of the city, but he likewise reproaches the ungrateful people with the deepest guilt, in rejecting the salvation which was offered to them, and drawing down on themselves a dreadful judgment of God. The word even, which is interwoven with it, is emphatic; for Christ silently contrasts Jerusalem with the other cities of Judea, or rather, of the whole world, and the meaning is: "If Even thou, who art distinguished by a remarkable privilege above the whole world, -- if thou at least, (I say,) who art a heavenly sanctuary in the earth, hadst known " This is immediately followed by another amplification taken from the time: "Though hitherto thou hast wickedly and outrageously rebelled against God, now at least there is time for repentance." For he means that the day is now at hand, which had been appointed by the eternal purpose of God for the salvation of Jerusalem, and had been foretold by the prophets. Thus (says Isaiah) is the accepted time, this is the day of salvation, (Isaiah 49:8; 2-Corinthians 6:2.) Seek the Lord while he may be found; call upon him while he is near, (Isaiah 55:6.) The things which belong to thy peace Under the word peace he includes, according to the meaning of the Hebrew phrase, all that is essential to happiness. Nor does he simply say, that Jerusalem did not know her peace, but the things which belonged to her peace; for it frequently happens that men are far from being unacquainted with their happiness, but they are ignorant of the way and means, (as we say,) because they are blinded by their wickedness. Now since the compassion is mingled with reproach, let us observe, that men deserve the heavier punishment in proportion to the excellence of the gifts which they have received, because to other sins there is added an impious profanation of heavenly grace. Secondly, let us observe, that the nearer God approaches to us, and holds out the light of sound doctrine, the less excusable are we, if we neglect this opportunity. The gate of salvation, indeed, is always open; but as God is sometimes silent, it is no ordinary privilege, when He invites us to himself with a loud voice, and in a familiar manner, and therefore the contempt will be visited by severer punishment. But now they are hid from thy eyes. This is not said for the purpose of extenuating the guilt of Jerusalem; for, on the contrary, it marks with disgrace the monstrous stupidity of that city, that, when God is present, it does not perceive him. I do acknowledge that it belongs to God alone to open the eyes of the blind, and that no man is qualified for understanding the mysteries of the heavenly kingdom, unless God enlighten him inwardly by his Spirit; but it does not follow from this that they who perish through their own brutal blindness are excusable. Christ intended also to remove an offense, which might otherwise have perplexed the ignorant and weak; for when the eyes of all were directed to that city, his example might have very great influence in both respects, either for evil or for good. That no man then may be perplexed by its unbelief and proud contempt of the Gospel, Jerusalem is condemned for disgraceful blindness.

The things which belong unto thy peace! - It is very likely that our Lord here alludes to the meaning of the word Jerusalem, ירושלים from ירה yereh, he shall see, and שלום shalom, peace or prosperity. Now, because the inhabitants of it had not seen this peace and salvation, because they had refused to open their eyes, and behold this glorious light of heaven which shone among them, therefore he said, Now they are hidden from thine eyes, still alluding to the import of the name.

(g) Saying, (h) If thou hadst known, even thou, (i) at least in this (k) thy day, the things [which belong] unto thy (l) peace! but now they are hid from thine eyes.
(g) Christ stops his speech, which partly shows how moved he was with compassion over the destruction of the city that was surely to come: and partly to reprove them for their treachery and stubbornness against him, such as has not been heard of before.
(h) You at the very least, O Jerusalem, to whom the message was properly sent.
(i) If after slaying so many prophets, and so often refusing me, the Lord of the prophets, if only now, especially in my last coming to you, you had any concern for yourself.
(k) The good and prosperous time is called the day of this city.
(l) That is, those things in which your happiness stands.

Saying, if thou hadst, known, even thou,.... As well as other cities; or who hast been so long a flourishing city, the metropolis of the nation, the seat of the ancient kings of Judah; yea, the city of the great God, the place of divine worship, whither the tribes came up, time after time, to serve the Lord; a city so highly honoured of God and man: or, who hast despised the messages of the servants of God, mocked and misused the prophets in time past, beat one, killed another, and stoned another: if such a city, after all this, had but known its true interest,
at least in this thy day; the day of thy visitation, the last day thou art to have, though it is so late:
the things which belong unto thy peace; meaning, not peace with God, and the things belonging, or conducing to that, which are not men's works of righteousness, nor tears of repentance, nor even faith itself, but the obedience and righteousness, the blood, sacrifice and death of Christ; nor spiritual peace, or internal peace of conscience, which comes in a Gospel way, through believing, in a course of obedience, and all from Christ, the peacemaker, and peace giver; nor eternal peace hereafter, which the grace of God gives a meetness for, and the righteousness of Christ a right unto; the knowledge of all which is not natural to men, or to be obtained of themselves, but is the gift of God's grace, and the operation of his Spirit: but supposing such a peace, and such things relating to it, were intended, nothing more can be inferred from hence, than that if the Jews had known these things, they had been happy; and since they had the means of knowing them, they were, of all men, inexcusable; and that Christ, as man, and one of their nation, and as a minister of the circumcision, had a passionate concern for their welfare: but not that these Jews, or any men, can of themselves, and without the unfrustrable grace of God working upon their hearts, and enlightening their understanding, know these things; or that Christ acted any insincere part in wishing for these things for them, as man, and a minister of the word, when he knew, as God, it was not consistent with the will of God that they should have them; since Christ, as man, sometimes earnestly prayed for that, which he, as God, knew could not be, as in the case of his own sufferings and death; nor is this irreconcilable to his dying intentionally only for those who are actually saved: but after all, these words are, only spoken of Jerusalem, and the inhabitants of that city, and not of all mankind, and regard only their temporal peace and welfare, whose destruction Christ knew was near at hand; and of which he afterwards speaks in the following verses:
but now they are hid from thine eyes; their eyes were blinded; they were given up to a judicial blindness, and hardness of heart; a spirit of slumber and stupidity had seized them; they could not discern the signs of the times and so disbelieved Jesus as the Messiah, and rejected him as such; whom, had they received only in a notional way, though they had not believed in him spiritually, to the saving of their souls, they would have been secured from outward calamities, and would have enjoyed peace and prosperity, and the things belonging to it our Lord speaks of. Christ alludes to the name of Jerusalem, which signifies the vision of peace; or they shall see peace; but her name and case now did not agree. His wish is the same the Psalmist encourages in Psalm 122:6 which, in the Septuagint version, is rendered, "pray for the things" that belong "to the peace Jerusalem".

at least in this, &c.--even at this moving moment. (See on Luke 13:9.)
thy peace--thinking perhaps of the name of the city. (Hebrews 7:2) [WEBSTER and WILKINSON]. How much is included in this word!
now . . . hid--It was His among His last open efforts to "gather them," but their eyes were judicially closed.

O that thou hadst known, at least in this thy day - After thou hast neglected so many. Thy day - The day wherein God still offers thee his blessings.