Cyril of Alexandria

But tell me, why do you question Him, and wish to learn of Himself, whether He be the Christ? For it is easy enough to obtain the knowledge of Him from the law and the prophets. Search the writings of Moses: you will see Him depicted there in manifold ways. For He was sacrificed as a lamb: He vanquished the destroyer by His blood: and was prefigured also in many other forms. Examine too the writings of the prophets; you will hear them proclaiming His divine and wonderful miracles. …

Commentary on the Gospel of Luke, Sermon 150 ↗

Theophylact of Ohrid

He knew the secrets of their hearts, that they who had not believed His works would much less believe His words. Hence it follows, And he said unto them, If I tell you, ye will not believe, &c. As if he said, There is no time left to you any longer for discourses and teaching, but hereafter shall be the time of judgment, when ye shall see Me, the Son of man, sitting on the right hand of the power of God. …

Catena Aurea by Aquinas ↗

Bede

And he said to them: If I tell you, you will not believe me. But if I also ask you, you will not answer me, nor let me go. Frequently he had said to them that he was the Christ, namely, when he said: I and the Father are one (John X); and again: The works that I do in my Father's name, they bear witness of me, but you do not believe (Ibid.), and such things. …

On the Gospel of Luke ↗

Bonaventure

Second, as to the malice in questioning, it is added: Saying: If you are the Christ, tell us. They do not ask this in order to be instructed, but in order to lay snares; whence the Gloss: "They do not desire the truth, but prepare a false accusation, so that, if he were to say: I am the Christ, they might accuse him of arrogating royal power to himself." They were seeking this in John 10: "The Jews surrounded him and said to him: If you are the Christ, tell us plainly." But this malice did not escape Christ, and therefore it is …

Commentary on Luke, Chapter 22 ↗