As Isaiah wrote the first part of his book, disaster had not yet come to the nation. People had grown tired of Isaiah's warnings & his constant talk of their need of repentance & a return to God. But Isaiah wrote the 2nd half of his book to the people who'd be taken away to Babylon. And in captivity they would not need to hear about judgment, because they'd be living it. They would not need to be reminded of their sins; they'd be experiencing the consequences on a daily basis. There were 3 things then that Isaiah has to say to the people.