'Dew of Heaven' in the Bible

Nevertheless, leave the ground of his root still in the earth, and bind him upon the plain field, with chains of iron and steel. With the dew of heaven shall he be wet, and he shall have his part in the herbs of the ground with other wild beasts.

But whereas the king saw a watcher, even a holy angel, that came down from heaven, and said, 'Hew down the tree, and destroy it: yet leave the ground of the root in the earth, and bind him upon the plain field with chains of iron and steel: He shall be wet with the dew of heaven, and his part shall be with the beasts of the field, till seven years be come and gone upon him.'

The very same hour was this matter fulfilled upon Nebuchadnezzar: so that he was cast out of men's company, and ate grass like an ox; His body was wet with the dew of heaven, till his hairs were as great as Eagle's feathers, and his nails like bird's claws.

He was shot out from among men, his heart was like a beast's heart, and his dwelling was with the wild asses: he was fain to eat grass like an ox, and his body was wet with the dew of heaven: till he knew, that the highest had power upon the kingdoms of men, and setteth over them, whom he list.