A chapter break was made at Chapter 53 because there is a change in voice. The nations of the world are speakers and the Jewish people is the servant that has suffered.
Which is absurd. The atonement and scapegoat corresponds to Lev. 16, and Israel does not make itself an atonement for the wicked Gentiles, with the Lord laying the sin of others on Israel, but the suffering servant does so for "my people," Israel.