The Book of Isaiah is a book of the [[Old Testament]] containing the words of the prophet [[Isaiah]]. Although it talks about [[judgement]], it ultimately declares a message of hope describing the coming [[Messiah]] and saviour.
Most scholars consider that Isaiah was written in two parts. The first half is generally believed to have been written by Isaiah (chapters 1-39) and the second half by another author (chapters 40 to 66). The reason for this is that the chapters 1 to 39 are set before the exile, whereas from chapter 40 onwards, the book looks at a time two hundred years later, after the return of exile.