Let no one hold that Christ was not always fully aware of His divinity, Messianic status, and mission. Let no one say that His sense of His mission increased over time, as if He was ever, in any measure, ignorant of His identity and mission:
DS 248 [Pope St. Gregory I the Great of Rome (Doctor), 8/600 Epistle to Patriarch Eulogius of Alexandria]:
(But) concerning that which has been written: That neither the Son, nor the angels know the day and the hour [cf. Mk 13:32], indeed, your holiness has perceived rightly, that since it most certainly should be referred not to the same son according to that which is the head, but according to his body which we are … He [St. Augustine] also says … that this can be understood of the same son, because omnipotent God sometimes speaks in a human way, as he said to Abraham: “Now I know that thou fearest God [Gen 22:12], not because God then knew that He was feared, but because at that time He caused Abraham to know that he feared God. For, just as we say a day is happy not because the day itself is happy, but because it makes us happy, so the omnipotent Son says He does not know the day which He causes not to be known, not because He himself is ignorant of it, but because He does not permit it to be known at all. Thus also the Father alone is said to know, because the Son (being) consubstantial with Him, on account of His nature, by which He is above the angels, has knowledge of that, of which the angels are unaware. Thus, also, this can be the more precisely understood because the Only-begotten having been incarnate, and made perfect man for us, in His human nature indeed did know the day and the hour of judgment, but nevertheless He did not know this from His human nature. Therefore, that which in (nature) itself He knew, He did not know from that very (nature), because God-made-man knew the day and hour of the judgment through the power of His Godhead … Thus, the knowledge which He did not have on account of the nature of His humanity-by reason of which, like the angels, He was a creature this He denied that He, like the angels, who are creatures, had. Therefore (as) God and man He knows the day and the hour of judgment; but On this account, because God is man. But the fact is certainly manifest that whoever is not a Nestorian, can in no wise be an Agnoeta. For with what purpose can he, who confesses that the Wisdom itself of God is incarnate say that there is anything which the Wisdom of God does not know? It is written: “In the beginning was the Word, and the Word was with God, and the Word was God. … All things were made by Him” [Jn 1:13]. If all, without doubt also the day of judgment and the hour. Who, therefore, is so foolish as to presume to assert that the Word of the Father made that which He does not know? it is written also: “Jesus knowing, that the Father gave Him all things into His hands” [Jn 13:3]. If all things, surely both the day of judgment and the hour. Who, therefore, is so stupid as to say that the Son has received in His hands that of which He is unaware?
DS 2034 [Pope St. Pius X’s Syllabus of Errors of the Modernists, Condemned Proposition #34]:
The critic cannot ascribe to Christ knowledge circumscribed by no limit, except on the supposition which can by no means be conceived historically, and which is repugnant to the moral sense, namely, that Christ as man had the knowledge of God, and nevertheless was unwilling to share the knowledge of so many things with His disciples and posterity.
DS 2184 [6/5/1918 Decree of the Holy Office, Condemned Proposition 2]: “Nor can the opinion be called certain which has established that the soul of Christ was ignorant of nothing, but from the beginning knew all things in the Word, past, present, and future, or all things that God knows by the knowledge of vision.”
DS 2289 [Pope Pius XII’s 6/29/1943 Encyclical Mystici Corporis]:
But such a most loving knowledge as the divine Redeemer from the first moment of His Incarnation bestowed upon us, surpasses any zealous power of the human mind; since through that beatific vision, which He began to enjoy when He had hardly been conceived in the womb of the Mother of God, He has the members of His mystical body always and constantly present to Him, and He embraces all with His redeeming love.
Cf. Huysman, Will R. “And Jesus advanced in wisdom and age and grace with God and men.” The Banana Republican. 26 Jan. 2009. 14 Oct. 2009 https://thebananarepublican1.wordpress.com/2009/10/14/luke-2-52-jesus-advanced-wisdom/.