Mark 14:61

But he held his peace, and answered nothing. Again the high priest asked him, and saith unto him, Art thou the Christ, the Son of the Blessed?

Answered nothing ... Jesus did not need to reply. Everyone knew that no offense had been proved against Jesus, Caiaphas himself being painfully aware of this.

Again the high priest asked him ... This is a reference to repeated questions regarding Christ's identity. In Mark's word "again," it is evident that more than one question and more than one reply came out of this confrontation. Thus, we may dispose of all alleged discrepancies regarding the reply quoted by Matthew and the one here quoted by Mark. The replies have exactly the same meaning; but in the reply quoted by Mark, there was not the slightest trace of ambiguity.

Art thou the Christ the Son of the Blessed ... Mark omitted the adjuration as given in Matthew, that being the formal placement of the Saviour upon oath. Since the adjuration was omitted here, it is possible that, following the reply recorded in Matthew, Caiaphas here repeated the question without mention of the oath, that having already been administered. This was precisely the question which the Pharisees had so long attempted to force Jesus to answer; but Christ, until this hour, had refused them, since to have answered sooner would have been premature. Now that no insurrection could be alleged against him, now that the other-worldly nature of his kingdom had been established, now that the whole sacred court of the Hebrews was in session, he would answer. He would, by such an answer as he would give, force their condemnation of him to rest upon their denial of the sacred truth that he was indeed the divine Messiah. All other charges had been disposed of. They did not, on this solemn occasion, accuse him of breaking the sabbath day; they had long ago lost that argument. They did not accuse him here of casting out demons by the power of the devil. Even that canard about destroying the temple was left out of sight. One charge alone they had God's permission to use, and Christ promptly gave it to them.