Does the book of Isaiah say anything about Jesus of Nazareth?

[SarahM32]

25. It's not really a problem.

Yes, Jewish and Christian tradition had held that the entire book of Isaiah was written by an 8th century BCE prophet Isaiah, but scholars have concluded that it had to have been written by different authors at different times.

As you mentioned, Wiki cites many different scholars who have provided other reasons for this conclusion. But that's clear even if you just consider that chapters 44 and 45 mention Cyrus the King of Persia who took Babylon, freed the Jewish people who had been held captive, and let them return to their homeland and establish their religious customs and temples. And Cyrus lived in 576 BC–530 BCE.

However, the authorship and period or time of writing does not alter the fact that the prophecies in Isaiah are consistent with the prophecies of other prophets, especially concerning Israel's iniquity and the Mashiach (Messiah) who ultimately judges it – who, as the article I cited reveals, was not Jesus.