Mark 13:32

But of that day and that hour knows no man, no, not the angels who are in heaven, neither the Son, but the Father.
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Athanasius the Apostolic

AD 373
When his disciples asked him about the end, he said with precision: Of that day or that hour no one knows, not even he himself—that is, when viewed according to the flesh, because he too, as human, lives within the limits of the human condition. He said this to show that, viewed as an ordinary man, he does not know the future, for ignorance of the future is characteristic of the human condition. Insofar as he is viewed according to his divinity as the Word who is to come, to judge, to be bridegroom, however, he knows when and in what hour he will come…. For as upon becoming human he hungers, thirsts and suffers, along with all human beings, similarly as human he does not see the future. But viewed according to his divinity as the Word and wisdom of the Father, he knows, and there is nothing which he does not know.

Augustine of Hippo

AD 430
It was not part of his office as our master that through him the day should become known to us. It remains true that the Father knows nothing that the Son does not know, since his Son, the Word, is his wisdom, and his wisdom is to know. But it was not for our good to know everything which was known to him who came to teach us. He surely did not come to teach us that which it was not good for us to know. As master he both taught some things and left other things untaught. He knew both how to teach us what was good for us to know, and not to teach us what was not for our good to know. It is according to this common form of speech that the Son is said “not to know” what he does not choose to teach. We are in the daily habit of speaking in this way. Accordingly he is said “not to know” what he causes us not to know.

Augustine of Hippo

AD 430
No one should arrogate to oneself the knowledge of that time by any computation of years. For if that day is to come after seven thousand years, everyone could learn its advent simply by adding up years. What comes then of the Son’s even “not knowing” this? This is said with this meaning, that his hearers do not learn this from the Son, not that he by himself does not know it. It is to be understood according to that form of speech by which “The Lord your God tries you that he may know,” which means, that he may make you know. Again, the phrase “arise, O Lord” means make us arise. Thus when the Son is said not to know this day, it is not because he is ignorant of it, but because he causes those to know it not for whom it is not yet expedient to know it, for he does not show it to them.

Augustine of Hippo

AD 430
I am by no means of the opinion that a figurative mode of expression can be rightly termed a falsehood. For it is no falsehood to call a day joyous because it makes people joyous. A lupine seed is not sad because it lengthens the face of the eater because of its bitter taste. So also we say that God “knows” something when he makes his hearers know it (an instance quoted by yourself in the words of God to Abraham, “Now I know that you fear God”). These are by no means false statements, as you yourself readily see. Accordingly, the blessed Hilary threw light on an obscure point by this kind of figurative expression, showing how we ought to understand the words that “he did not know the day,” with no other meaning than this: In proportion as he had made others ignorant by concealing his meaning, he spoke of it figuratively as his own lack of knowledge. So by concealing it, he so to speak caused others not to know it. He did not by this explanation condone lying, but he proved that it was ...

Augustine of Hippo

AD 430
According to “the form of God” everything that the Father has belongs to the Son: for “All things that are mine are yours, and yours are mine.” According to the form of a slave, however, his teaching is not his own, but of the One who sent him. Hence “Of that day or hour no one knows, neither the angels in heaven, nor the Son, but the Father only.” He is ignorant of this in the special sense of making others ignorant. He did not “know it” in their presence in such a way as to be prepared to reveal it to them at that time. Recall that in a similar way it was said to Abraham: “Now I know that you fear God,” in the sense that now I am taking you through a continuing journey to know yourself, because Abraham came to know himself only after he had been tried in adversity…. Jesus was “ignorant” in this sense, so to speak, among his disciples, of that which they were not yet able to know from him. He only said that which was seasonally fitting for them to know. Among those with mature wisdom ...

George Leo Haydock

AD 1849
But how can the Son be ignorant of that last day? Were this the case, we must thence conclude that his nature was imperfect: since he was under the necessity of a second coming, and yet was ignorant when that time should be. But we must remember, that the meaning of this sentence is not, that Christ was really ignorant of this circumstance, but only that it was not then a convenient time to disclose the secret. (St. Augustine) Not as if Christ were ignorant himself, as certain Eutychian heretics, called Agnoitæ, held; but because he knew it not as our teacher, to teach it others, as being not expedient. (St. Ambrose, de fide, lib. v. chap. viii.) The Son of God is ignorant of this day, not according to his divinity, which sees and knows all things; but according to his humanity, which does not know it of itself, of its own light, but by revelation which is made to it by the divinity, which is intimately united to it. In naturâ quidem divinitatis novit, says St. Gregory, non ex naturâ...

Gregory The Dialogist

AD 604
When we speak of a glad day, we do not mean that the day itself is glad, but that it makes us glad. So also the Almighty Son says that he does not know the day which he causes not to be known. It is not that he himself does not know it, but that he does not allow it to be known. Only the Father is said to know the future in this same way. The Son, who according to his divinity is of the same essential nature with the Father, has knowledge of that which the angels are ignorant. The only begotten, being incarnate and made for us a perfect man, knew indeed in the nature of his incarnate humanity the day and hour of the judgment, but still it was not from the nature of his humanity as such that he knew it. What then he knew in his humanity he knew not from it. Epistle , To Eulogius.

Gregory the Theologian

AD 390
The last day and hour no one knows, not even the Son himself, but the Father. Yet how can the source of wisdom be ignorant of anything—that is, wisdom who made the world, who perfects all, who remodels all, who is the limit of all things that were made, who knows the things of God and the spirit of a person, knowing the things that lie deep within? For what can be more perfect than this knowledge? How then can you say that all things before that hour he knows accurately, and all things that are to happen about the time of the end, but of the hour itself he is ignorant? For such a thing would be like a riddle. It is as if one were to say that he knew accurately all that was in front of the wall, but did not know the wall itself. Or that, knowing the end of the day, he did not know the beginning of the night. Yet knowledge of the one necessarily implies the other. Thus everyone must see that the Son knows as God, and knows not as man (if we may for the purposes of argument distinguish th...

Hilary of Poitiers

AD 368
It is sometimes turned into a reproach against the only begotten God that he did not know the day and the hour. It is said that, though God, born of God, he is not in the perfection of divine nature, since he is subjected to the limitation of ignorance, namely, to an external force stronger than himself, triumphing, as it were, over his weakness. The heretics in their frenzy would try to drive us to this blasphemous interpretation: that he is thus captive to this external limitation, which makes such a confession inevitable. The words are those of the Lord himself. What could be more unholy, we ask, than to corrupt his express assertion by our attempt to explain it away? But, before we investigate the meaning and occasion of these words, let us first appeal to the judgment of common sense. Is it credible, that he, who stands to all things as the author of their present and future, should not know all things? … All that is derives from God alone its origin, and has in him alone the effi...

Irenaeus of Lyons

AD 202
The gnostics presumptuously assume acquaintance with the unspeakable mysteries of God. Remember that even the Lord, the very Son of God, allowed that the Father alone knows the very day and hour of judgment…. If then the Son was not ashamed to ascribe the knowledge of that day to the Father only, but declared what was true regarding the matter, neither let us be ashamed to reserve for God those enigmatic questions which come our way. .
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Knowing this first, that no prophecy of the scripture is of any private interpretation - 2 Peter 1:20

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