Texts Explained; Eleventhly, Mark 13:32 and Luke 2:52 Arianexplanation 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 Spiritknowsthe Day, therefore the Son knows; if the Son knowsthe Father, therefore He knowsthe Day; if He has all that is the Father's, therefore knowledge of the Day; if in the Father, He knowsthe Day in the Father; if He created and upholds all things, He knowswhen they will cease to be. He knowsnot 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 knownot,' 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
48 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 Saviour 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.' 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.'
49. 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 Saviour 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.' 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.'
50. 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.
Source: Four Discourses Against the Arians (New Advent)