Isaiah 29:7-8

7The great crowd of armies from all the nations that attack Ariel will quickly disappear. They will soon come to an end, like a dream that someone sees in the night. All the weapons that they bring to attack the city's walls will disappear!

8A hungry man may dream that he is eating a big meal. But as soon as he wakes up, he knows that he is still hungry! A thirsty man may dream that he is drinking. But as soon as he wakes up, he knows that he is still weak and thirsty. That is what it will be like for the great armies from all the nations that have come to attack Mount Zion.