But of that day and hour. By this sentence, Christ intended to hold the minds of believers in suspense that they might not, by a false imagination, fix any time for the final redemption. We know how fickle our minds are, and how much we are tickled by a vain curiosity to know more than is proper. Christ likewise perceived that the disciples were pushing forward with excessive haste to enjoy a triumph. He therefore wishes the day of his coming to be the object of such expectation and desire, that none shall dare to inquire when it will happen. In short, he wishes his disciples so to walk in the light of faith, that while they are uncertain as to the time, they may patiently wait for the revelation of him. We ought therefore to be on our guard, lest our anxiety about the time be carried farther than the Lord allows; for the chief part of our wisdom lies in confining ourselves soberly within the limits of God's word. That men may not feel uneasy at not knowing that day, Christ represents angels as their associates in this matter; for it would be a proof of excessive pride and wicked covetousness, to desire that we who creep on the earth should know more than is permitted to the angels in heaven. [1] Mark adds, nor the Son himself. And surely that man must be singularly mad, who would hesitate to submit to the ignorance which even the Son of God himself did not hesitate to endure on our account. But many persons, thinking that this was unworthy of Christ, have endeavored to mitigate the harshness of this opinion by a contrivance of their own; and perhaps they were driven to employ a subterfuge by the malice of the Arians, who attempted to prove from it that Christ is not the true and only God. So then, according to those men, Christ did not know the last day, because he did not choose to reveal it to men. But since it is manifest that the same kind of ignorance is ascribed to Christ as is ascribed to the angels, we must endeavor to find some other meaning which is more suitable. Before stating it, however, I shall briefly dispose of the objections of those who think that it is an insult offered to the Son of God, if it be said that any kind of ignorance can properly apply to him. As to the first objection, that nothing is unknown to God, the answer is easy. For we know that in Christ the two natures were united into one person in such a manner that each retained its own properties; and more especially the Divine nature was in a state of repose, and did not at all exert itself, [2] whenever it was necessary that the human nature should act separately, according to what was peculiar to itself, in discharging the office of Mediator. There would be no impropriety, therefor in saying that Christ, who knew all things, (John 21:17) was ignorant of something in respect of his perception as a man; for otherwise he could not have been liable to grief and anxiety, and could not have been like us, (Hebrews 2:17.) Again, the objection urged by some--that ignorance cannot apply to Christ, because it is the punishment of sin -- is beyond measure ridiculous. For, first, it is prodigious folly to assert that the ignorance which is ascribed to angels proceeds from sin; but they discover themselves to be equally foolish on another ground, by not perceiving that Christ clothed himself with our flesh, for the purpose of enduring the punishment due to our sins. And if Christ, as man, did not know the last day, that does not any more derogate from his Divine nature than to have been mortal. I have no doubt that he refers to the office appointed to him by the Father as in a former instance, when he said that it did not belong to him to place this or that person at his right or left hand, (Matthew 20:23; Mark 5:40.) For (as I explained under that passage [3] ) he did not absolutely say that this was not in his power, but the meaning was, that he had not been sent by the Father with this commission, so long as he lived among mortals. So now I understand that, so far as he had come down to us to be Mediator, until he had fully discharged his office that information was not given to him which he received after his resurrection; for then he expressly declared that power over all things had been given to him, (Matthew 28:18.)

Footnotes

1 - "Aux anges de Paradis;" -- "to the angels in Paradise."

2 - "La Divinité s'est tenue comme cachee; c'est à dire, n'a point demonstré sa vertu;" -- "the Divine nature was kept, as it were, concealed; that is, did not display `its power."

3 - Harmony, [8]vol. 2, p. 421

But of that day and hour - Of the precise time of the fulfillment. The "general signs" of its approach have been given, as the budding of the fig-tree is a certain indication that summer is near; but "the precise time" is not indicated by these things. One part of their inquiry was Matthew 24:3 when those things should be. He now replies to them by saying that the precise time would not be foretold. Compare the notes at Acts 1:7.
Knoweth no man, no, not the angels - See the notes at Mark 13:32.

But of that day and hour - Ωρα, here, is translated season by many eminent critics, and is used in this sense by both sacred and profane authors. As the day was not known, in which Jerusalem should be invested by the Romans, therefore our Lord advised his disciples to pray that it might not be on a Sabbath; and as the season was not known, therefore they were to pray that it might not be in the winter; Matthew 24:20. See on Mark 13:32 (note).

(9) But of that day and hour knoweth no [man], no, not the angels of heaven, but my Father only.
(9) It is sufficient for us to know that God has appointed a latter day for the restoring of all things; but when it will be is hidden from us all for our sake, so that we may be all the more watchful, so that we are not taken as those were taken in the flood years ago.

But of that day and hour knoweth no man,.... Which is to be understood, not of the second coming of Christ, the end of the world, and the last judgment; but of the coming of the son of man, to take vengeance on the Jews, and of their destruction; for the words manifestly regard the date of the several things going before, which only can be applied to that catastrophe, and dreadful desolation: now, though the destruction itself was spoken of by Moses and the prophets, was foretold by Christ, and the believing Jews had some discerning of its near approach; see Hebrews 10:25 yet the exact and precise time was not known: it might have been: calculated to a year by Daniel's weeks, but not to the day and hour; and therefore our Lord does not say of the year, but of the day and hour no man knows; though the one week, or seven years, being separated from the rest, throws that account into some perplexity; and which perhaps is on purpose done, to conceal the precise time of Jerusalem's destruction: nor need it be wondered at, notwithstanding all the hints given, that the fatal day should not be exactly known beforehand; when those who have lived since, and were eyewitnesses of it, are not agreed on what day of the month it was; for, as Dr. Lightfoot (i) observes, Josephus (k) says,
"that the temple perished the "tenth" day of "Lous", a day fatal to the temple, as having been on that day consumed in flames, by the king of Babylon.
And yet Rabbi Jochanan ben Zaccai, who was also at the destruction of it, as well as Josephus, with all the Jewish writers, say it was on the "ninth of Ab"; for of this day they (l) say, five things happened upon it:
"On the "ninth of Ab" it was decreed concerning our fathers, that they should not enter into the land (of Canaan), the first and second temple were destroyed, Bither was taken, and the city ploughed up.
Though the words of R. Jochanan, cited by the doctor, refer to the first, and not to the second temple, and should have been rendered thus:
"If I had been in the generation (which fixed the fast for the destruction of the first temple), I would not have fixed it but on the tenth (of Ab); for, adds he, the greatest part of the temple was burnt on that day; but the Rabbins rather regarded the beginning of the punishment (m).
And so the fasting of Rabbi, and R. Joshua ben Levi, on the "ninth" and "tenth" days, were on account of the first temple; for they were under the same difficulty about the one, as the other:
no, not the angels of heaven; who dwell there, always behold the face of God, stand in his presence ready to do his will, and are made acquainted with many of his designs, and are employed in the executing of them, and yet know not the time of God's vengeance on the Jews; to this agrees the sense that is given of the day of vengeance in Isaiah 63:4 it is asked (n),
"what is the meaning of these words, "the day of vengeance is in my heart?" Says R. Jochanan, to my heart I have revealed it, to the members I have not revealed it: says R. Simeon ben Lakish, to my heart I have revealed it, , "to the ministering angels I have not revealed it".
The Ethiopic version adds here, "nor the son", and so the Cambridge copy of Beza's; which seems to be transcribed from Mark 13:32 where that phrase stands; and must be understood of Christ as the son of man, and not as the Son of God; for as such, he lay in the bosom of the Father, and knew all his purposes and designs; for these were purposed in him: he knew from the beginning who would betray him, and who would believe in him; he knew what would befall the rejecters of him, and when that would come to pass; as he must know also the day of the last judgment, since it is appointed by God, and he is ordained to execute it: but the sense is, that as he, as man and mediator, came not to destroy, but to save; so it was not any part of his work, as such, to know, nor had he it in commission to make known the time of Jerusalem's ruin:
but my Father only; to the exclusion of all creatures, angels and men; but not to the exclusion of Christ as God, who, as such, is omniscient; nor of the Holy Spirit, who is acquainted with the deep things of God, the secrets of his heart, and this among others,
(i) In Mark xiii. 32. (k) De Bello Jude. l. 6. c. 26. (l) Misu. Taanith, c. 4. sect. 7. T. Hieros. Taanioth, fol. 68. 3. & Maimon. Hilch. Taanioth, c. 5. sect. 2. (m) T. Bab, Taanith, fol. 29. 1. (n) T. Bab. Sanhedrin, fol. 99. 1.

Of that day and hour knoweth no one. How foolish then to be figuring out the time of the Lord's coming.

But of that day - The day of judgment; Knoweth no man - Not while our Lord was on earth. Yet it might be afterward revealed to St. John consistently with this.