Charles Spurgeon Commentary Isaiah 53:7-8

"He was oppressed, yet when he was afflicted he opened not his mouth; as a lamb that is led to the slaughter, and as a sheep that before its shearers is dumb, so he opened not his mouth. By oppression and judgment he was taken away; and as for his generation, who [among them] considered that he was cut off out of the land of the living for the transgression of my people to whom the stroke [was due]?" — Isaiah 53:7-8 (ASV)

He is brought as a lamb to the slaughter, and as a sheep before her shearer is dumb, so he opens not his mouth. He was taken from prison and from judgment: and who shall declare his generation?

Who shall speak up for him? It was the custom of the Jews, when a man was condemned to death, to allow a certain interval, during which the heralds went through the streets, and made proclamation that if any man knew any reason why the criminal should be spared, he should at once appear at the court and declare it. Someone often came forward, with one plea or another, in arrest of judgment; but when our Lord was condemned to death, none would speak up for him.