Isaiah 30:3

The safety they had sought would prove to be a delusion. The supposed protection that Pharaoh offered would result in the disappointment of hope, and the shelter that Egypt promised would turn to disgrace. The Pharaoh at this time was Shabako, a Nubian. The Egyptians were not even strong enough to provide a native Egyptian to rule them. This was a weak period in Egyptian history. I am assuming that the historical context of this prophecy was shortly before Sennacherib’s invasion of Jerusalem in 701 B.C.