GOD'S WORD® Translation
They will be like hungry people who dream that they're eating and wake up to find they're hungry. They will be like thirsty people who dream that they're drinking and wake up to find they're lightheaded and parched with thirst. This is what will happen to the armies from all the nations that fight against Mount Zion.

American Standard Version
And it shall be as when a hungry man dreameth, and, behold, he eateth; but he awaketh, and his soul is empty: or as when a thirsty man dreameth, and, behold, he drinketh; but he awaketh, and, behold, he is faint, and his soul hath appetite: so shall the multitude of all the nations be, that fight against mount Zion.

Berean Study Bible
as when a hungry man dreams he is eating, then awakens still hungry; as when a thirsty man dreams he is drinking, then awakens faint and parched. So will it be for all the many nations who go to battle against Mount Zion.

Douay-Rheims Bible
And as he that is hungry dreameth, and eateth, but when he is awake, his soul is empty: and as he that is thirsty dreameth, and drinketh, and after he is awake, is yet faint with thirst, and his soul is empty: so shall be the multitude of all the Gentiles, that have fought against mount Sion.

English Revised Version
And it shall be as when an hungry man dreameth, and, behold, he eateth; but he awaketh, and his soul is empty: or as when a thirsty man dreameth, and, behold, he drinketh; but he awaketh, and, behold, he is faint, and his soul hath appetite: so shall the multitude of all the nations be, that fight against mount Zion.

King James Bible
It shall even be as when an hungry man dreameth, and, behold, he eateth; but he awaketh, and his soul is empty: or as when a thirsty man dreameth, and, behold, he drinketh; but he awaketh, and, behold, he is faint, and his soul hath appetite: so shall the multitude of all the nations be, that fight against mount Zion.

World English Bible
It will be like when a hungry man dreams, and behold, he eats; but he awakes, and his hunger isn't satisfied; or like when a thirsty man dreams, and behold, he drinks; but he awakes, and behold, he is faint, and he is still thirsty. The multitude of all the nations that fight against Mount Zion will be like that.

Young's Literal Translation
And it hath been, as when the hungry dreameth, And lo, he is eating, And he hath waked, and empty is his soul, And as when the thirsty dreameth, And lo, he is drinking, and he hath waked, And lo, he is weary, and his soul is longing, So is the multitude of all the nations Who are warring against mount Zion.

Isaiah 29:8 Additional Translations ...