Why did Jesus remain silent during parts of his trail during crucifixion?

The silence of Jesus during his trial speaks of many things. Jesus remained silent at his trial to A) Fulfill Prophecy B) Expose Judicial Corruption and C) Submit to God's Redemptive Plan.

This is crucial because it signifies their willingness to take personal responsibility for the injustice of condemning an innocent man thus indicating full willingness to bear the guilt of this wrongful act. (ref Isaiah 6:9–10)

A) “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.” [Isaiah 53:7; KJV]. — He was fulfilling the OT prophecy of Isaiah and it is the Holy Spirit Himself that enables prophecy. The sacrificial character of the death of the Servant of the Lord is distinctly defined as a “trespass offering” (ref Leviticus 14:12).

The trial of Our Lord symbolized profound injustice The first one was before the Jewish religious authorities

Before The Jewish Sanhedrin :

i) Lack of Any Evidence - The Gospel of Mark explicitly states: “And the chief priests and all the council sought for witness against Jesus to put him to death; and found none.” [Mark 14:55; KJV]. Moreover , a false witness carried the same penalty as intended for the accused as per the Bible (ref Deuteronomy 19:18-19). However this was on fulfillment of OT prophecy (ref Psalm 35:11).

ii) Abuse of the Accused - Mosaic laws stipulated humane treatment of the accused (ref Leviticus 19:13) The physical and psychological abuse violated the sanctity of judicial proceedings.

iii) Denial of Defense - Jewish law mandatorily required efforts to absolve the accused in capital cases. The chief priests directly pressured Jesus to indict Himself: “If you are the Christ, tell us” (Luke 22:67).

Under The Roman Governor :

i) Lack of Any Evidence -

1. The query of Pilate (ref Mark 15:14) underscores the absence of any tangible wrongdoing. Yet, mob influence triumphed over judicial integrity.
2. The symbolic act of Pilate famously washing his hands before the crowd, declaring himself innocent of Jesus’ blood (ref Matthew 27:24) further emphasized the lack of lawful grounds for the sentence.

ii) Abuse of the Accused - Roman legal traditions, as recorded in the Digest of Justinian, uphold the principle of presumption of innocence. This abuse, tacitly permitted by the authorities, rendered the trial a grotesque spectacle of injustice. “And so Pilate, willing to content the people, released Barabbas unto them, and delivered Jesus, when he had scourged him, to be crucified.” [Mark 15:15; KJV]

iii) Denial of Defense - Roman legal traditions provided the accused with opportunities for self-defense. During the trial of Jesus these principles were blatantly ignored.

So the Lord accordingly fulfilled the OT passage depicting the Suffering Servant (ref Isaiah 53:7). After all, the greatest born of woman hailed Him as “the Lamb of God who takes away the sins of the world”.