In chapter 12 there is a further review of the situation and a conclusion to the vision. This is not something that chronologically happens after verse 45 of chapter 11.
When we see oppressors and enemies who are too strong for us to cope with, those whose hearts are set on our destruction, we remember that the Lord has commissioned his servants to prevent any ultimate harm from coming to us. We walk by faith and not by sight, and we see these invisible helpers.