“When Yahweh has given you rest
From your pain,
From your turmoil,
From your hard service,
With which
You were made to serve,
You will take up this taunt
Against the king of Babylon.”
Many believe that this may have been a taunt by Isaiah against the dead King Sargon II, who died in 705 BCE after ruling from 722 BCE. Later it was used against King Nebuchadnezzar II (605-562 BCE). It assumes that the Israelites had returned from the Exile. They had some rest from their pain, turmoil, and hard service. Now they were able to taunt the king of Babylon.
Eugene Finnegan Bible Project 