Mt 27:11-12, Mk 14:60-61, Acts 8:30-35, 1 Pt 2:22-24

In the Old Testament, Isaiah prophesied that Christ would not open his mouth like a lamb to the slaughter, but would die for our sins. (Isa 53:7-9)

Isa 53:7 He was oppressed, and he was afflicted, yet he opened not his mouth: he is brought as a lamb to the slaughter, and as a sheep before her shearers is dumb, so he openeth not his mouth. 8 He was taken from prison and from judgment: and who shall declare his generation? for he was cut off out of the land of the living: for the transgression of my people was he stricken. 9 And he made his grave with the wicked, and with the rich in his death; because he had done no violence, neither was any deceit in his mouth.

As the Old Testament prophesied, Jesus did not answer the governor's question, Are you the Christ? (Mt 27:11-12, Mark 14:60-61)

Mt 27:11 And Jesus stood before the governor: and the governor asked him, saying, Art thou the King of the Jews? And Jesus said unto him, Thou sayest. 12 And when he was accused of the chief priests and elders, he answered nothing.

Mark 14:60 And the high priest stood up in the midst, and asked Jesus, saying, Answerest thou nothing? what is it which these witness against thee? 61 But he held his peace, and answered nothing. Again the high priest asked him, and said unto him, Art thou the Christ, the Son of the Blessed?

The Ethiopian eunuch asked Philip who did not open his mouth like a lamb to the slaughter of which Isaiah spoke. Philip explained it and testified to the Ethiopian eunuch that Jesus was the Christ. (Acts 8:30-35)

Acts 8:30 And Philip ran thither to him, and heard him read the prophet Esaias, and said, Understandest thou what thou readest? 31 And he said, How can I, except some man should guide me? And he desired Philip that he would come up and sit with him. 32 The place of the scripture which he read was this, He was led as a sheep to the slaughter; and like a lamb dumb before his shearer, so opened he not his mouth: 33 In his humiliation his judgment was taken away: and who shall declare his generation? for his life is taken from the earth. 34 And the eunuch answered Philip, and said, I pray thee, of whom speaketh the prophet this? of himself, or of some other man? 35 Then Philip opened his mouth, and began at the same scripture, and preached unto him Jesus.

As the Old Testament prophesied, Jesus died on the cross to forgive our sins without answering anything. (1 Peter 2:22-24)

1 Peter 2:22 Who did no sin, neither was guile found in his mouth: 23 Who, when he was reviled, reviled not again; when he suffered, he threatened not; but committed himself to him that judgeth righteously: 24 Who his own self bare our sins in his own body on the tree, that we, being dead to sins, should live unto righteousness: by whose stripes ye were healed.