Do we have a choice?

So, what's the significance of these verses? You're changing track, you're talking about how do you respond to this message of the Messiah?
We've talked about the need for the Messiah to come to answer the question about where was God; we talked about the answer to suffering; we talked about the Messiah Himself suffering in our place.
Now, the question which the prophet asks is: 'How are you going to respond to this?'