Buffalo wrote:We can certainly date them to long after the time of the real Isaiah. Isaiah was an 8th century prophet and Cyrus was a 6th century historical figure.
But Buffalo, this is just evidence that there was this Duetero Isaiah. I mean, I agree that much of Isaiah, well I don't know how much, but some of Isaiah is from after Isaiah's time, but it can also be true that the ideas, the teachings found in Deutero Isaiah came from a record via Isaiah's hand, but was re-written, edited, yet in essence copied from Isaiah. I'm not saying this is what happened. I'm just syaing there are possibilities, and that we can't date things quite like we can with more modern things, like the song you mention. We're having to rely on experts who see what they can and then make conclusions based on their established patterns. That doesn't mean they are 100% right. It doesn't mean they are wrong. It just means we can't conclusively prove some of their ideas--like Deutero Isaiah.