Isaiah 13

Generations before Babylon rose to power, while Assyria still ruled much of Isaiah's world God revealed the future rise of the Medes to Israel. This passage gives us a small idea regarding the foresight that God has. He was already looking past the time of Hezekiah, past the fall of Jerusalem, and into the decdance of corrupt and self-centered Babylon. God's plan to punish Babylon was already established. Did he tell Isaiah so that God could gloat? No. This was revealed because God wanted to give his people the exclusive first scoop. He wanted it written down and memorized generations before it came to be so that he could display his power and his faithfulness.
It took me about 4 minutes to read this passage.
Stuart