Daniel 4:32

And on account of this Scripture says, "He shall lie outside in the grass and in the dew of heaven and with the beasts and his portion shall be in the grass of the earth. His heart shall be changed from men and a heart of a beast shall be given to him." [Daniel 4:15-16] For no longer did the great king and ruler live as a man administering the kingdom, but being alone in the desert he ate grass and herbs until his heart was changed and became as a beast who lived in forests and caverns, until his hair grew as a lion's and his nails grew large as a bird's and seven seasons passed over him. [Daniel 4:32]

Verses 31, 32. "While the saying was yet in the king's mouth, a voice from heaven assailed him: 'King Nebuchadnezzar, to thee it is spoken, thy kingdom shall pass away (variant reading: is passing away) from thee and they shall cast thee forth from among mankind.'" His arrogant boasting is immediately punished by the Lord. For this reason the execution of the sentence is not delayed, lest mercy towards the poor seem to have profited him not at all. But as soon as he has spoken in pride, he straightway loses the kingdom which had been reserved for him on account of his works of charity.

"...until thou dost recognize that the Most High reigns in the kingdom of men." In misery it comes as a great consolation to know, when one is in a painful situation, that a more favorable future will ensue. Yet Nebuchadnezzar's fury and madness were so pronounced that in time of affliction he would not have remembered the blessings which God had promised him.