J
Joe_5859
Guest
I once took a class on just Isaiah 40-66. 
This is one of those areas where Catholics are free to come to different conclusions.
There is a lot of textual evidence that places the composition of Isaiah 40-55 in the 500s. There is also a lot of textual evidence that implies different people wrote both portions of Isaiah (e.g. specific words that appear scores of times in one section donāt appear at all in the other). Ultimately, itās not proof, just evidence in support of a theory.
Personally, I donāt think itās all that necessary for the vast majority of Catholics to get overly hung up on the minutiae of biblical criticism. Whether Isaiah was written by one guy named Isaiah in 700 or whether is was written by dozens of guys in the āIsaiahan school of thoughtā over the course of centuries, what matters most to us as Catholics is the book as it is right now. It may be interesting to parse out how the book was put together, but itās ultimately speculation (even if it is fairly informed speculation).
I would say that itās not accurate to define āprophecyā solely as āforetelling the future.ā Ultimately, prophecy involves being a mouthpiece for God. That can involve spelling out what will take place in the future if people donāt change course from their current trajectory. But that isnāt fundamentally what prophecy is about. Itās about speaking the truth for the purpose of effecting conversion of heart.
This is one of those areas where Catholics are free to come to different conclusions.
There is a lot of textual evidence that places the composition of Isaiah 40-55 in the 500s. There is also a lot of textual evidence that implies different people wrote both portions of Isaiah (e.g. specific words that appear scores of times in one section donāt appear at all in the other). Ultimately, itās not proof, just evidence in support of a theory.
Personally, I donāt think itās all that necessary for the vast majority of Catholics to get overly hung up on the minutiae of biblical criticism. Whether Isaiah was written by one guy named Isaiah in 700 or whether is was written by dozens of guys in the āIsaiahan school of thoughtā over the course of centuries, what matters most to us as Catholics is the book as it is right now. It may be interesting to parse out how the book was put together, but itās ultimately speculation (even if it is fairly informed speculation).
I would say that itās not accurate to define āprophecyā solely as āforetelling the future.ā Ultimately, prophecy involves being a mouthpiece for God. That can involve spelling out what will take place in the future if people donāt change course from their current trajectory. But that isnāt fundamentally what prophecy is about. Itās about speaking the truth for the purpose of effecting conversion of heart.