III. But while these things were doing, and the disciples were rejoicing and praising God with a loud voice for all the mighty works that they had seen, saying, Blessed be the King that comes in the name of the Lord; peace in heaven, and glory in the highest; the city began to inquire, saying, Who is this? stirring up its hardened and inveterate envy against the glory of the Lord. But when you hear me say the city, understand the ancient and disorderly multitude of the synagogue. They ungratefully and malignantly ask, Who is this? As if they had never yet seen their Benefactor, and Him whom divine miracles, beyond the power of man, had made famous and renowned; for the darkness comprehended not that unsetting light which shone in upon it. Hence quite appositely with respect to them has the prophet Isaiah exclaimed, saying, Hear, you deaf; and look, you blind, that you may see. And who is blind, but my children? And deaf, but they that have the dominion over them? And the servants of the Lord have become blind; you have often seen, but you observed not; your ears are opened, yet you hear not. See, beloved, how accurate are these words; how the Divine Spirit, who Himself sees beforehand into the future, has by His saints foretold of things future as if they were present. For these thankless men saw, and by means of His miracles handled the wonder-working God, and yet remained in unbelief. They saw a man, blind from his birth, proclaiming to them the God who had restored his sight. They saw a paralytic, who had grown up, as it were, and become one with his infirmity, at His bidding loosed from his disease. They saw Lazarus, who was made an exile from the region of death. They heard that He had walked on the sea. They heard of the wine that, without previous culture, was ministered; of the bread that was eaten at that spontaneous banquet; they heard that the demons had been put to flight; the sick restored to health Their very streets proclaimed His deeds of wonder; their roads declared His healing power to those who journeyed on them. All Judea was filled with His benefit; yet now, when they hear the divine praises, they inquire, Who is this? O the madness of these falsely-named teachers! O incredulous fathers! O foolish seniors! O seed of the shameless Canaan, and not of Judah the devout! The children acknowledge their Creator, but their unbelieving parents said, Who is this? The age that was young and inexperienced sang praises to God, while they that had waxen old in wickedness inquired, Who is this? Sucklings praise His Divinity, while seniors utter blasphemies; children piously offer the sacrifice of praise, while profane priests are impiously indignant.
IV. O you disobedient as regards the wisdom of the just, turn your hearts to your children. Learn the mysteries of God; the very thing itself which is being done bears witness that it is God that is thus hymned by uninstructed tongues. Search the Scriptures, as you have heard from the Lord; for they are they which testify of Him, and be not ignorant of this miracle. Hear you men without grace, and thankless, what good tidings the prophet Zechariah brings to you. He says, Rejoice greatly, O daughter of Zion; behold your King comes unto you: just and having salvation; lowly, and riding upon the foal of an ass. Why do you repel the joy? Why, when the sun shines, do you love darkness? Why do you against unconquerable peace meditate war? If, therefore, you be the sons of Zion, join in the dance together with your children. Let the religious service of your children be to you a pretext for joy. Learn from them who was their Teacher; who called them together; whence was the doctrine; what means this new theology and old prophecy. And if no man has taught them this, but of their own accord they raise the hymn of praise, then recognise the work of God, even as it is written in the law: “Out of the mouth of babes and sucklings have You perfected praise.” Redouble, therefore, your joy, that you have been made the fathers of such children who, under the teaching of God, have celebrated with their praises things unknown to their seniors. Turn your hearts to your children, and close not your eyes against the truth. But if you remain the same, and hearing, hear not, and seeing, perceive not, and to no purpose dissent from your children, then shall they be your judges according to the Saviour's word. Well, therefore, even this thing also, together with others, has the prophet Isaiah spoken before of you, saying, Jacob shall not now be ashamed, neither shall his face now wax pale. But when they see their children doing my works, they shall for me sanctify My name, and sanctify the Holy One of Jacob, and shall fear the God of Israel. They also that err in spirit shall come to understanding, and they that murmured shall learn obedience, and the stammering tongues shall learn to speak peace. Do you see, O foolish Jew, how from the beginning of his discourse, the prophet declares confusion to you because of your unbelief. Learn even from him how he proclaims the God-inspired hymn of praise that is raised by your children, even as the blessed David has declared beforehand; saying, Out of the mouth of babes and sucklings have You perfected praise. Either then—as is right—claim the piety of your children for your own, or devoutly give your children unto us. We with them will lead the dance, and to the new glory will sing in concert the divinely-inspired hymn.
Source: Oration on the Psalms (New Advent)