Isaiah 20: Egypt and Ethiopia will be conquered by Assyria

 In Isaiah 20 we read that a commander from Assyria came to a Philistian  city (Ashdod) and took it. In this year, the Lord said to Isaiah:

"Go, take off your clothes and sandals,"

Isaiah did it for three years. The Lord said that he did it "as a warning sign to Egypt and Ethiopia, so the king of Assyria is going to come and take the Egyptians as captives and the Ethiopians as exiles."

The Philistian are closed connected to Egyptians.

People who were protected by Egypt or Ethiopia will be perplexed when they see Egyptians and Ethiopians taken as captives:

‘Look at them! Naked and barefooted, shuffling off to exile! And we thought they were our best hope, that they’d rescue us from the king of Assyria. Now what’s going to happen to us? How are we going to get out of this?’”