These are rebellious people, deceitful children, children unwilling to listen to the Lord’s instruction

Isaiah 30:1-17
Go now, write it on a tablet for them, inscribe it on a scroll, that for the days to come it may be an everlasting witness. For these are rebellious people, deceitful children, children unwilling to listen to the Lord’s instruction.
You said, ‘No, we will flee on horses.’ Therefore you will flee! You said, ‘We will ride off on swift horses.’ Therefore your pursuers will be swift! A thousand will flee at the threat of one; at the threat of five you will all flee away, till you are left like a flagstaff on a mountaintop, like a banner on a hill.”
Judah is in league with Egypt and they think themselves secure against Assyria, despite all Isaiah's earlier warnings. But when it comes to the crunch(緊縮) Egypt will sit tight while the Assyrians invade Judah. 
Why?
People doesn't know the Lord will find their own ways to solve their thread and problems. Even many prophets warned to them, they did not listen. So the Lord gave clear warning to them and write it on a tablet for them.
The consequence of rebellious people, deceitful children unwilling to listen to the Lord's instruction are flee, their pursuers will be swift, and flee away, till left like a flagstaff on a mountaintop, very little.
How?
Be humble and fear the Lord, God is my salvation only.