Ambassadors of Peace Weep
This "woe differs from the others in that it is addressed to Assyria, not to Judah [that is, it starts out that way]. By focusing exclusively on Assyria's defeat and Judah's salvation, the prophecy magnifies Judah's exalted King (vv. 3, 5, 10). This woe oracle consists of an introduction of the main themes of the oracle (vv. 1-6); an emphasis on Judah's need for salvation and the LORD's provision of that need (vv. 7-13), and its spiritual impact on sinners (vv. 14-16); and a conclusion showing the majestic King in His beauty (vv. 17-24)" (Nelson Study Bible, note on chap. 33).
Then Jerusalem a Quiet Home
In verse 7, we see how the hopes of the ambassadors for peace have been dashed. How often this has been true—particularly of Jerusalem. This ancient city's name means "Possession of Peace." But of all the war-wracked and violent places on the earth, Jerusalem has been one of the worst. Thankfully, God will at last intervene for His people. He will defeat the enemies of peace and establish it permanently. Jesus will reign in Jerusalem—a "quiet home." It will at long last live up to its name and truly be the city of peace.
Incidentally, many believe that America's Founding Fathers considered verse 22 as part of their justification for establishing three separate branches of government in the United States—the judicial, legislative and executive branches.