I love the book of Isaiah, for one can hear and feel this old prophet's righteous angst toward his nation, his passionate heart for people and his confident connection with God.
In these verses, out of nowhere God just shows up and pokes a hole in Isaiah's well intended rant, with a powerful Word of promise:
"For to us a child is born, to us a son is given, and the government will be on his shoulders. And he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace. Of the greatness of his government and peace there will be no end. He will reign on David’s throne and over his kingdom, establishing and upholding it with justice and righteousness from that time on and forever. The zeal of the Lord Almighty will accomplish this."
Isaiah 9:6-7 NIV
Isaiah's scribes were like, "Wow, where did that come from?"