The prophecies of this chapter occur after the exile in Babylon and are not in reference to the people contemporary to Isaiah. (See: [[rc://en/tw/dict/bible/kt/prophet]])
There is an important teaching or prophecy about the messiah beginning in this chapter and continues through the next chapter. This prophesy begins in 52:13 and scholars usually note that it portrays the messiah as a "suffering servant." (See: [[rc://en/tw/dict/bible/kt/christ]])