Isaiah 52:15

“But as it is written: “Those who were not told about him will see, and those who have not heard will understand.””

Quoting a similar idea of shocking revelation to the nations.

“See, my servant will act wisely; he will be raised and lifted up and highly exalted.”

Immediately preceding verse speaking of the servant's exaltation after suffering.

“After he has suffered, he will see the light of life and be satisfied; by his knowledge my righteous servant will justify many, and he will bear their iniquities.”

Connects the suffering servant with justification and bearing iniquities.

“This is the passage of Scripture the eunuch was reading: “He was led like a sheep to the slaughter, and as a lamb before its shearer is silent, so he did not open his mouth. In his humiliation he was deprived of justice. Who can speak of his descendants? For his life was taken from the earth.” The eunuch asked Philip, “Tell me, please, who is the prophet talking about, himself or someone else?” Then Philip began with that very passage of Scripture and told him the good news about Jesus.”

New Testament application of Isaiah 53 to Jesus, the suffering servant.

“he says: “It is too small a thing for you to be my servant to restore the tribes of Jacob and bring back those of Israel I have kept. I will also make you a light for the Gentiles, that my salvation may reach to the ends of the earth.””

Shares the theme of extending salvation to the Gentiles/nations.