Matthew 24

36 “But of that day and hour no one knows, not even the angels of heaven, but My Father only.

Mark 13

32 “But of that day and hour no one knows, not even the angels in heaven, nor the Son, but only the Father.

Therefore Jesus can't be God? In this text I will post the answers to this objection by St. Basil and St. Athanasius.

St. Athanasius on the Son's knowledge of the day and hour:

(from Four Discourses Against the Arians)

Discourse III

Texts Explained; Eleventhly, Mark 13:32 and Luke 2:52 Arian explanation of the former text is against the Regula Fidei; and against the context. Our Lord said He was ignorant of the Day, BY REASON OF HIS HUMAN NATURE. If the Holy Spirit knows the Day, therefore the Son knows; if the Son knows the Father, therefore He knows the Day; if He has all that is the Father’s, therefore knowledge of the Day; if in the Father, He knows the Day in the Father; if He created and upholds all things, He knows when they will cease to be. He knows not AS MAN, argued from Matthew 24:42. As He asked about Lazarus’s grave, etc., yet knew, so He knows; as St. Paul says, ‘whether in the body I know not,’ etc., yet knew, so He knows. He said He knew not for our profit, that we be not curious as in Acts 1:7, where on the contrary He did not say He knew not. As the Almighty asks of Adam and of Cain, yet knew, so the Son knows [as God]. Again, He advanced in wisdom also as man, else He made Angels perfect before Himself. He advanced, in that the Godhead was manifested in Him more fully as time went on.
These things being so, come let us now examine into ‘But of that day and that hour knows no man, neither the Angels of God, nor the Son ;’ for being in great ignorance as regards these words, and being stupefied about them, they think they have in them an important argument for their heresy. But I, when the heretics allege it and prepare themselves with it, see in them the giants again fighting against God. For the Lord of heaven and earth, by whom all things were made, has to litigate before them about day and hour; and the Word who knows all things is accused by them of ignorance about a day; and the Son who knows the Father is said to be ignorant of an hour of a day; now what can be spoken more contrary to sense, or what madness can be likened to this? Through the Word all things have been made, times and seasons and night and day and the whole creation; and is the Framer of all said to be ignorant of His work? And the very context of the lection shows that the Son of God knows that hour and that day, though the Arians fall headlong in their ignorance. For after saying, ‘nor the Son,’ He relates to the disciples what precedes the day, saying, ‘This and that shall be, and then the end.’ But He who speaks of what precedes the day, knows certainly the day also, which shall be manifested subsequently to the things foretold. But if He had not known the hour, He had not signified the events before it, as not knowing when it should be. And as any one, who, by way of pointing out a house or city to those who were ignorant of it, gave an account of what comes before the house or city, and having described all, said, ‘Then immediately comes the city or the house,’ would know of course where the house or the city was (for had he not known, he had not described what comes before lest from ignorance he should throw his hearers far out of the way, or in speaking he should unawares go beyond the object), so the Lord saying what precedes that day and that hour, knows exactly, nor is ignorant, when the hour and the day are at hand.
Now why it was that, though He knew, He did not tell His disciples plainly at that time, no one may be curious where He has been silent; for ‘Who has known the mind of the Lord, or who has been His counsellor (Romans 11:34)?’ but why, though He knew, He said, ‘no, not the Son knows,’ this I think none of the faithful is ignorant, viz. that He made this as those other declarations as man BY REASON OF THE FLESH. For this as before is not the Word’s deficiency , but of THAT HUMAN NATURE whose property it is to be ignorant. And this again will be well seen by honestly examining into the occasion, when and to whom the Savior spoke thus. Not then when the heaven was made by Him, nor when He was with the Father Himself, the Word ‘disposing all things,’ nor before He became man did He say it, but when ‘the Word became flesh (John 1:14).’ On this account it is reasonable to ascribe TO HIS MANHOOD everything which, after He became man, He speaks humanly. For it is proper to the Word to know what was made, nor be ignorant either of the beginning or of the end of these (for the works are His), and He knows how many things He wrought, and the limit of their consistence. And knowing of each the beginning and the end, He knows surely the general and common end of all. Certainly when He says in the Gospel concerning Himself in His human character, ‘Father, the hour has come, glorify Your Son ,‘ it is plain that He knows also the hour of the end of all things, as the Word, though AS MAN He is ignorant of it, for ignorance IS PROPER TO MAN , and especially ignorance of these things. Moreover this is proper to the Savior’s love of man; for since He was made man, He is not ashamed, BECAUSE OF THE FLESH WHICH IS IGNORANT, to say ‘I know not,’ that He may show that knowing as God, He is but ignorant ACCORDING TO THE FLESH. And therefore He said not, ‘no, not the Son of God knows,’ lest the Godhead should seem ignorant, but simply, ‘no, not the Son,’ that the ignorance might be the Son’s AS BORN FROM AMONG MEN.
On this account, He alludes to the Angels, but He did not go further and say, ‘not the Holy Ghost;’ but He was silent, with a double intimation; first that if the Spirit knew, much more must the Word know, considered as the Word, from whom the Spirit receives; and next by His silence about the Spirit, He made it clear, that He said of His human ministry, ‘no, not the Son.’ And a proof of it is this; that, when He had spoken humanly ‘No, not the Son knows,’ He yet shows that divinely He knew all things. For that Son whom He declares not to know the day, Him He declares to know the Father; for ‘No one,’ He says, ‘knows the Father save the Son (Matthew 11:27).’ And all men but the Arians would join in confessing, that He who knows the Father, much more knows the whole of the creation; and in that whole, its end. And if already the day and the hour be determined by the Father, it is plain that through the Son are they determined, and He knows Himself what through Him has been determined, for there is nothing but has come to be and has been determined through the Son. Therefore He, being the Framer of the universe, knows of what nature, and of what magnitude, and with what limits, the Father has willed it to be made; and in the how much and how far is included its period. And again, if all that is the Father’s, is the Son’s (and this He Himself has (John 16:15) said), and it is the Father’s attribute to know the day, it is plain that the Son too knows it, having this proper to Him from the Father. And again, if the Son be in the Father and the Father in the Son, and the Father knows the day and the hour, it is clear that the Son, being in the Father and knowing the things of the Father, knows Himself also the day and the hour. And if the Son is also the Father’s Very Image, and the Father knows the day and the hour, it is plain that the Son has this likeness also to the Father of knowing them. And it is not wonderful if He, through whom all things were made, and in whom the universe consists, Himself knows what has been brought to be, and when the end will be of each and of all together; rather is it wonderful that this audacity, suitable as it is to the madness of the Ario-maniacs, should have forced us to have recourse to so long a defense. For ranking the Son of God, the Eternal Word, among things originate, they are not far from venturing to maintain that the Father Himself is second to the creation; for if He who knows the Father knows not the day nor the hour, I fear lest the knowledge of the creation, or rather of the lower portion of it, be greater, as they in their madness would say, than knowledge concerning the Father.
But for them, when they thus blaspheme the Spirit, they must expect no remission ever of such irreligion, as the Lord has said ; but let us, who love Christ and bear Christ within us, know that the Word, not as ignorant, considered as Word, has said ‘I know not,’ for He knows, but as showing His manhood , in that to be ignorant is proper to man, and that He had put on flesh that was ignorant , being in which, He said according to the flesh, ‘I know not.’ And for this reason, after saying, ‘No not the Son knows,’ and mentioning the ignorance of the men in Noah’s day, immediately He added, ‘Watch therefore, for you know not in what hour your Lord does come,’ and again, ‘In such an hour as you think not, the Son of man comes Matthew 24:42, 44.’ For I too, having become as you for you, said ‘no, not the Son.’ For, had He been ignorant divinely, He must have said, ‘Watch therefore, for I know not,’ and, ‘In an hour when I think not;’ but in fact this has He not said; but by saying ‘You know not’ and ‘When ye think not,’ He has signified that it belongs to man to be ignorant; for whose sake He too having a flesh like theirs and having become man, said ‘No, not the Son knows,’ for He knew not IN FLESH, though knowing as Word. And again the example from Noah exposes the shamelessness of Christ’s enemies; for there too He said not, ‘I knew not,’ but ‘They knew not until the flood came (Matthew 24:39).’ For men did not know, but He who brought the flood (and it was the Savior Himself) knew the day and the hour in which He opened the cataracts of heaven and broke up the great deep, and said to Noah, ‘Come thou and all your house into the ark (Genesis 7:1).’ For were He ignorant, He had not foretold to Noah, ‘Yet seven days and I will bring a flood upon the earth.’ But if in describing the day He makes use of the parallel of Noah’s time, and He did know the day of the flood, therefore He knows also the day of His own coming.
Moreover, after narrating the parable of the Virgins, again He shows more clearly who they are who are ignorant of the day and the hour, saying, ‘Watch therefore, for you know neither the day nor the hour (Matthew 25:13).’ He who said shortly before, ‘No one knows, no not the Son,’ now says not ‘I know not,’ but ‘ye know not.’ In like manner then, when His disciples asked about the end, suitably said He then, ‘no, nor the Son,’ according to the flesh because of the body; that He might show that, AS MAN, He knows not; for ignorance is proper to man. If however He is the Word, if it is He who is to come, He to be Judge, He to be the Bridegroom, He knows when and in what hour He comes, and when He is to say, ‘Awake, you that sleep, and arise from the dead, and Christ shall give you light Ephesians 5:14.’ For as, on becoming man, He hungers and thirsts and suffers with men, so with men AS MAN He knows not; though divinely, being in the Father Word and Wisdom, He knows, and there is nothing which He knows not. In like manner also about Lazarus He asks humanly, who was on His way to raise him, and knew whence He should recall Lazarus’s soul; and it was a greater thing to know where the soul was, than to know where the body lay; but He asked humanly, that He might raise divinely. So too He asks of the disciples, on coming into the parts of Caesarea, though knowing even before Peter made answer. For if the Father revealed to Peter the answer to the Lord’s question, it is plain that through the Son was the revelation, for ‘No one knows the Son,’ says He, ‘save the Father, neither the Father save the Son, and he to whomsoever the Son will reveal Him Luke 10:22.’ But if through the Son is revealed the knowledge both of the Father and the Son, there is no room for doubting that the Lord who asked, having first revealed it to Peter from the Father, next asked humanly; in order to show, that asking after the flesh, He knew divinely what Peter was about to say. The Son then knew, as knowing all things, and knowing His own Father, than which knowledge nothing can be greater or more perfect.
This is sufficient to confute them; but to show still further that they are hostile to the truth and Christ’s enemies, I could wish to ask them a question. The Apostle in the Second Epistle to the Corinthians writes, ‘I knew a man in Christ, above fourteen years ago, whether in the body I do not know, or whether out of the body I do not know; God knows.’ What now say ye? Knew the Apostle what had happened to him in the vision, though he says ‘I know not,’ or knew he not? If he knew not, see to it, lest, being familiar with error, you err in the trespass of the Phrygians , who say that the Prophets and the other ministers of the Word know neither what they do nor concerning what they announce. But if he knew when he said ‘I know not,’ for he had Christ within him revealing to him all things, is not the heart of God’s enemies indeed perverted and ‘self-condemned?’ for when the Apostle says, ‘I know not,’ they say that he knows; but when the Lord says, ‘I know not,’ they say that He does not know. For if since Christ was within him, Paul knew that of which he says, ‘I know not,’ does not much more Christ Himself know, though He say, ‘I know not?’ The Apostle then, the Lord revealing it to him, knew what happened to him; for on this account he says, ‘I knew a man in Christ.’ and knowing the man, he knew also how the man was caught away. Thus Elisha, who beheld Elijah, knew also how he was taken up; but though knowing, yet when the sons of the Prophets thought that Elijah was cast upon one of the mountains by the Spirit, he knowing from the first what he had seen, tried to persuade them; but when they urged it, he was silent, and suffered them to go after him. Did he then not know, because he was silent? He knew indeed, but as if not knowing, he suffered them, that they being convinced, might no more doubt about the taking up of Elijah. Therefore much more Paul, himself being the person caught away, knew also how he was caught; for Elijah knew; and had any one asked, he would have said how. And yet Paul says ‘I know not,’ for these two reasons, as I think at least; one, as he has said himself, lest because of the abundance of the revelations any one should think of him beyond what he saw; the other, because, our Savior having said ‘I know not,’ it became him also to say ‘I know not,’ lest the servant should appear above his Lord, and the disciple above his Master.
Therefore He who gave to Paul to know, much rather knew Himself; for since He spoke of the antecedents of the day, He also knew, as I said before, when the Day and when the Hour, and yet though knowing, He says, ‘No, not the Son knows.’ Why then said He at that time ‘I know not,’ what He as Lord, knew? As we may by searching conjecture, for our profit, as I think at least, did He this; and may He grant to what we are now proposing a true meaning! On both sides did the Savior secure our advantage; for He has made known what comes before the end, that, as He said Himself, we might not be startled nor scared, when they happen, but from them may expect the end after them. And concerning the day and the hour He was not willing to say according to His divine nature, ‘I know,’ but after the flesh, ‘I know not,’ for the sake of the flesh which was ignorant , as I have said before; lest they should ask Him further, and then either He should have to pain the disciples by not speaking, or by speaking might act to the prejudice of them and us all. For whatever He does, that altogether He does for our sakes, since also for us ‘the Word became flesh.’ For us therefore He said ‘No, not the Son knows;’ and neither was He untrue in thus saying (for He said humanly, as man, ‘I know not’), nor did He suffer the disciples to force Him to speak, for by saying ‘I know not’ He stopped their inquiries. And so in the Acts of the Apostles it is written, when He went upon the Angels, ascending as man, and carrying up to heaven the flesh which He bore, on the disciples seeing this, and again asking, ‘When shall the end be, and when will You be present?’ He said to them more clearly, ‘It is not for you to know the times or the seasons which the Father has put in His own power Acts 1:7.’ And He did not then say, ‘No, not the Son,’ as He said before humanly, but, ‘It is not for you to know.’ For now the flesh had risen and put off its mortality and been deified; and no longer did it become Him to answer after the flesh when He was going into the heavens; but henceforth to teach after a divine manner, ‘It is not for you to know times or seasons which the Father has put in His own power; but you shall receive Power.’ And what is that Power of the Father but the Son? For Christ is ‘God’s Power and God’s Wisdom.’
The Son then did know, as being the Word; for He implied this in what He said —’I know but it is not for you to know;’ for it was for your sakes that sitting also on the mount I said ACCORDING TO THE FLESH, ‘No, not the Son knows,’ for the profit of you and all. For it is profitable to you to hear so much both of the Angels and of the Son, because of the deceivers which shall be afterwards; that though demons should be transfigured as Angels, and should attempt to speak concerning the end, you should not believe, since they are ignorant; and that, if Antichrist too, disguising himself, should say, ‘I am Christ,’ and should try in his turn to speak of that day and end, to deceive the hearers, ye, having these words from Me, ‘No, not the Son,’ may disbelieve him also. And further, not to know when the end is, or when the day of the end, is expedient for man, lest knowing, they might become negligent of the time between, awaiting the days near the end; for they will argue that then only must they attend to themselves. Therefore also has He been silent of the time when each shall die, lest men, being elated on the ground of knowledge, should immediately neglect themselves for the greater part of their time. Both then, the end of all things and the limit of each of us has the Word concealed from us (for in the end of all is the end of each, and in the end of each the end of all is comprehended), that, whereas it is uncertain and always in prospect, we may advance day by day as if summoned, reaching forward to the things before us and forgetting the things behind. For who, knowing the day of the end, would not be dilatory with the interval? But, if ignorant, would not be ready day by day? It was on this account that the Savior added, ‘Watch therefore, for you know not what hour your Lord does come;’ and, ‘In such an hour as you think not, the Son of man comes Matthew 24:42; Luke 12:40.’ For the advantage then which comes of ignorance has He said this; for in saying it, He wishes that we should always be prepared; ‘for you,’ He says, ‘know not; but I, the Lord, know when I come, though the Arians do not wait for Me, who am the Word of the Father.’
The Lord then, knowing what is good for us beyond ourselves, thus secured the disciples; and they, being thus taught, set right those of Thessalonica when likely on this point to run into error. However, since Christ’s enemies do not yield even to these considerations, I wish, though knowing that they have a heart harder than Pharaoh, to ask them again concerning this. In Paradise God asks, ‘Adam, where are You ‘ and He inquires of Cain also, ‘Where is Abel your brother?’ What then say you to this? For if you think Him ignorant and therefore to have asked, you are already of the party of the Manichees, for this is their bold thought; but if, fearing the open name, you force yourselves to say, that He asks knowing, what is there extravagant or strange in the doctrine, that you should thus fall, on finding that the Son, in whom God then inquired, that same Son who now is clad in flesh, inquires of the disciples AS MAN? Unless forsooth, having become Manichees, you are willing to blame the question then put to Adam and all that you may give full play to your perverseness. For being exposed on all sides, you still make a whispering from the words of Luke, which are rightly said, but ill understood by you. And what this is, we must state, that so also their corrupt meaning may be shown.
Now Luke says, ‘And Jesus advanced in wisdom and stature, and in grace with God and man Luke 2:52.’ This then is the passage, and since they stumble in it, we are compelled to ask them, like the Pharisees and the Sadducees, of the person concerning whom Luke speaks. And the case stands thus. Is Jesus Christ man, as all other men, or is He God bearing flesh? If then He is an ordinary man as the rest, then let Him, as a man, advance; this however is the sentiment of the Samosatene, which virtually indeed you entertain also, though in name you deny it because of men. But if He be God bearing flesh, as He truly is, and ‘the Word became flesh,’ and being God descended upon earth, what advance had He who existed equal to God? Or how had the Son increase, being ever in the Father? For if He who was ever in the Father, advanced, what, I ask, is there beyond the Father from which His advance might be made? Next it is suitable here to repeat what was said upon the point of His receiving and being glorified. If He advanced when He became man, it is plain that, before He became man, He was imperfect; and rather the flesh became to Him a cause of perfection, than He to the flesh. And again, if, as being the Word, He advances, what has He more to become than Word and Wisdom and Son and God’s Power? For the Word is all these, of which if one can anyhow partake as it were one ray, such a man becomes all perfect among men, and equal to Angels. For Angels, and Archangels, and Dominions, and all the Powers, and Thrones, as partaking the Word, behold always the face of His Father. How then does He who to others supplies perfection, Himself advance later than they? For Angels even ministered to His human birth, and the passage from Luke comes later than the ministration of the Angels. How then at all can it even come into thought of man? Or how did Wisdom advance in wisdom? Or how did He who to others gives grace (as Paul says in every Epistle, knowing that through Him grace is given, ‘The grace of our Lord Jesus Christ be with you all’), how did He advance in grace? For either let them say that the Apostle is untrue, and presume to say that the Son is not Wisdom, or else if He is Wisdom as Solomon said, and if Paul wrote, ‘Christ God’s Power and God’s Wisdom,’ of what advance did Wisdom admit further?
For men, creatures as they are, are capable in a certain way of reaching forward and advancing in virtue. Enoch, for instance, was thus translated, and Moses increased and was perfected; and Isaac ‘by advancing became great ;’ and the Apostle said that he ‘reached forth Philippians 3:13 ‘ day by day to what was before him. For each had room for advancing, looking to the step before him. But the Son of God, who is One and Only, what room had He for reaching forward? For all things advance by looking at Him; and He, being One and Only, is in the Only Father, from whom again He does not reach forward, but in Him abides ever. To men then belongs advance; but the Son of God, since He could not advance, being perfect in the Father, humbled Himself for us, that in His humbling we on the other hand might be able to increase. And our increase is no other than the renouncing things sensible, and coming to the Word Himself; since His humbling is nothing else than His taking our flesh. It was not then the Word, considered as the Word, who advanced; who is perfect from the perfect Father, who needs nothing, nay brings forward others to an advance; but humanly is He here also said to advance, since advance belongs to man. Hence the Evangelist, speaking with cautious exactness, has mentioned stature in the advance; but being Word and God He is not measured by stature, which belongs to bodies. Of the body then is the advance; for, it advancing, in it advanced also the manifestation of the Godhead to those who saw it. And, as the Godhead was more and more revealed, by so much more did His grace as man increase before all men. For as a child He was carried to the Temple; and when He became a boy, He remained there, and questioned the priests about the Law. And by degrees His body increasing, and the Word manifesting Himself in it, He is confessed henceforth by Peter first, then also by all, ‘Truly this is the Son of God ;’ however willfully the Jews, both the ancient and these modern , shut fast their eyes, lest they see that to advance in wisdom is not the advance of Wisdom Itself, but rather the manhood’s advance in It. For ‘Jesus advanced in wisdom and grace;’ and, if we may speak what is explanatory as well as true, He advanced in Himself; for ‘Wisdom built herself a house,’ and in herself she gave the house advancement.
(What moreover is this advance that is spoken of, but, as I said before, the deifying and grace imparted from Wisdom to men, sin being obliterated in them and their inward corruption, according to their likeness and relationship to the flesh of the Word?) For thus, the body increasing in stature, there developed in it the manifestation of the Godhead also, and to all was it displayed that the body was God’s Temple, and that God was in the body. And if they urge, that ‘The Word become flesh’ is called Jesus, and refer to Him the term ‘advanced,’ they must be told that neither does this impair the Father’s Light , which is the Son, but that it still shows that the Word has become man, and bore true flesh. And as we said that He suffered in the flesh, and hungered in the flesh, and was fatigued in the flesh, so also reasonably may He be said to have advanced in the flesh; for neither did the advance, such as we have described it, take place with the Word external to the flesh, for in Him was the flesh which advanced and His is it called, and that as before, that man’s advance might abide and fail not, because of the Word which is with it. Neither then was the advance the Word’s, nor was the flesh Wisdom, but the flesh became the body of Wisdom. Therefore, as we have already said, not Wisdom, as Wisdom, advanced in respect of Itself; but THE MANHOOD advanced in Wisdom, transcending by degrees human nature, and being deified, and becoming and appearing to all as the organ of Wisdom for the operation and the shining forth of the Godhead. Wherefore neither said he, ‘The Word advanced,’ but Jesus, by which Name the Lord was called when He became man; so that the advance is of the human nature in such wise as we explained above.

St. Basil on the Son's knowledge of the day and hour:

(from Letter 236)

Enquiry has already frequently been made concerning the saying of the gospels as to our Lord Jesus Christ's ignorance of the day and of the hour of the end; Mark 13:32 an objection constantly put forward by the Anomœans to the destruction of the glory of the Only-Begotten, in order to show Him to be unlike in essence and subordinate in dignity; inasmuch as, if He know not all things, He cannot possess the same nature nor be regarded as of one likeness with Him, who by His own prescience and faculty of forecasting the future has knowledge coextensive with the universe. This question has now been proposed to me by your intelligence as a new one. I can give in reply the answer which I heard from our fathers when I was a boy, and which on account of my love for what is good, I have received without question. I do not expect that it can undo the shamelessness of them that fight against Christ, for where is the reasoning strong enough to stand their attack? It may, however, suffice to convince all that love the Lord, and in whom the previous assurance supplied them by faith is stronger than any demonstration of reason.

Now no man seems to be a general expression, so that not even one person is excepted by it, but this is not its use in Scripture, as I have observed in the passage there is none good but one, that is, God. For even in this passage the Son does not so speak to the exclusion of Himself from the good nature. But, since the Father is the first good, we believe the words no man to have been uttered with the understood addition of first. So with the passage No man knows the Son but the Father; Matthew 11:27 even here there is no charge of ignorance against the Spirit, but only a testimony that knowledge of His own nature naturally belongs to the Father first. Thus also we understand No man knows, Matthew 24:36 to refer to the Father the first knowledge of things, both present and to be, and generally to exhibit to men the first cause. Otherwise how can this passage fall in with the rest of the evidence of Scripture, or agree with the common notions of us who believe that the Only-Begotten is the image of the invisible God, and image not of the bodily figure, but of the very Godhead and of the mighty qualities attributed to the essence of God, image of power, image of wisdom, as Christ is called the power of God and the wisdom of God? 1 Corinthians 1:24 Now of wisdom knowledge is plainly a part; and if in any part He falls short, He is not an image of the whole; and how can we understand the Father not to have shown that day and that hour — the smallest portion of the ages — to Him through Whom He made the ages? How can the Creator of the universe fall short of the knowledge of the smallest portion of the things created by Him? How can He who says, when the end is near, that such and such signs shall appear in heaven and in earth, be ignorant of the end itself? When He says, The end is not yet. Matthew 24:6 He makes a definite statement, as though with knowledge and not in doubt. Then further, it is plain to the fair enquirer that our Lord says many things to men, in the character of man; as for instance, give me to drink John 4:7 is a saying of our Lord, expressive of His bodily necessity; and yet the asker was not soulless flesh, but Godhead using flesh endued with soul. So in the present instance no one will be carried beyond the bounds of the interpretation of true religion, who understands the ignorance of him who had received all things according to the œconomy, and was advancing with God and man in favour and wisdom.

It would be worthy of your diligence to set the phrases of the Gospel side by side, and compare together those of Matthew and those of Mark, for these two alone are found in concurrence in this passage. The wording of Matthew is of that day and hour knows no man, no, not the angels of heaven, but my Father only. That of Mark runs, But of that day and that hour knows no man, no, not the angels which are in heaven, neither the Son, but the Father. Mark 13:32 What is noticeable in these passages is this; that Matthew says nothing about the ignorance of the Son, and seems to agree with Mark as to sense in saying but my Father only. Now I understand the word only to have been used in contradistinction to the angels, but that the Son is not included with His own servants in ignorance.

He could not say what is false Who said All things that the Father has are Mine, John 16:15 but one of the things which the Father has is knowledge of that day and of that hour. In the passage in Matthew, then, the Lord made no mention of His own Person, as a matter beyond controversy, and said that the angels knew not and that His Father alone knew, tacitly asserting the knowledge of His Father to be His own knowledge too, because of what He had said elsewhere, as the Father knows me even so know I the Father, John 10:15 and if the Father has complete knowledge of the Son, nothing excepted, so that He knows all knowledge to dwell in Him, He will clearly be known as fully by the Son with all His inherent wisdom and all His knowledge of things to come. This modification, I think, may be given to the words of Matthew, but my Father only. Now as to the words of Mark, who appears distinctly to exclude the Son from the knowledge, my opinion is this. No man knows, neither the angels of God; nor yet the Son would have known unless the Father had known: that is, the cause of the Son's knowing comes from the Father. To a fair hearer there is no violence in this interpretation, because the word only is not added as it is in Matthew. Mark's sense, then, is as follows: of that day and of that hour knows no man, nor the angels of God; but even the Son would not have known if the Father had not known, for the knowledge naturally His was given by the Father. This is very decorous and becoming the divine nature to say of the Son, because He has, His knowledge and His being, beheld in all the wisdom and glory which become His Godhead, from Him with Whom He is consubstantial.

You can find the whole texts at https://www.newadvent.org/