And the high priest, rising up. It is certain that Christ was silent when false witnesses pressed hard upon him, not only because they did not deserve a reply, but because he did not seek to be now acquitted, knowing that his hour was come. But Caiaphas triumphs over him on account of his silence, as if he was struck dumb by being vanquished; which is usually the case with men who are conscious of having done wrong. But it is an instance of extreme wickedness that he insinuates that Christ is not free from blame, because witnesses speak against him. The question, What is it that those men testify against thee? amounts to this: "How comes it that those men oppose thee, but because they are urged by conscientious views? For they would not have appeared against thee without a good reason." As if he did not know that those witnesses had been procured by fraud: but this is the way in which wicked men, when they find themselves in the possession of authority and power, throw off sham and indulge in arrogance. Christ was again silent, not only because the objection was frivolous, but because, having been appointed to be a sacrifice, he had thrown aside all anxiety about defending himself.

Jesus held his peace - Was silent. He knew that the evidence did not even appear to amount to anything worth a reply. He knew that they were aware of that, and that feeling that, the high priest attempted to draw something from him on which they could condemn him.
I adjure thee by the living God - I put thee upon thy oath before God. This was the usual form of putting an oath among the Jews. It implies calling God to witness the truth of what was said. The law respecting witnesses also made it a violation of an oath to conceal any part of the truth; and though our Saviour might have felt that such a question, put in such a manner, was very improper or was unlawful, yet he also knew that to be silent would be construed into a denial of his being the Christ. The question was probably put in auger. They had utterly failed in their proof. They had no way left to accomplish their purpose of condemning him but to draw it from his own lips. This cunning question was therefore proposed. The difficulty of the question consisted in this: If he confessed that he was the Son of God, they stood ready to condemn him for "blasphemy;" if he denied it, they were prepared to condemn him for being an impostor, and for deluding the people under the pretence of being the Messiah.
The living God - Yahweh is called the living God in opposition to idols, which were without life.
The Christ - The Messiah, the Anointed. See the notes at Matthew 1:1.
The Son of God - The Jews uniformly expected that the Messiah would be the Son of God. In their view it denoted, also, that he would be "divine," or equal to the Father, John 10:31-36. To claim that title was therefore, in their view, "blasphemy;" and as they had determined beforehand in their own minds that he was not the Messiah, they were ready at once to accuse him of blasphemy.

Answerest thou nothing? - The accusation was so completely frivolous that it merited no notice: besides, Jesus knew that they were determined to put him to death, and that his hour was come; and that therefore remonstrance or defense would be of no use: he had often before borne sufficient testimony to the truth.

And the high priest arose, and said unto him, Answerest thou nothing? (c) what [is it which] these witness against thee?
(c) How does it come to pass that these men witness against thee?

And the high priest arose and said unto him,.... He rose up from his seat in great wrath and anger; partly being vexed, that they could get no other and better testimony; and partly because of Christ's contemptuous silence, giving no answer to the witnesses, as judging they deserved none; and which highly provoked the high priest, and therefore in passion said,
answerest thou nothing? what is it which these witness against thee? Is it true or false, right or wrong? The Vulgate Latin renders it, "dost thou answer nothing to those things which these witness against thee?" To which agree the Arabic version, and Munster's Hebrew Gospel.

Answerest thou nothing? Under the false charges Jesus maintained an impressive silence. "As a sheep before the shearers is dumb, so he opened not his mouth."
I adjure thee, etc. This was the formula for an oath. The High Priest, contrary to the principle of law which forbids that a prisoner shall be compelled to criminate himself, called on Jesus to be a witness against himself. To answer yes, or no, to such a question, was to answer under oath.