All this came upon the king Nebuchadnezzar. All that was signified in the dream, his madness, the removal of him from the administration of government, and the brutal life he lived for seven years; for this was not a mere parable or fiction, as some have thought, framed to describe the state and punishment of a proud man, but was a real fact; though it is not made mention of by any historians, excepting what has been observed before out of Abydenus ,See Gill on "Da 4:16", yet there is no reason to doubt of the truth of it, from this relation of Daniel; and is further confirmed by his observing the same to Belshazzar his grandson some years after it was done, as a known thing, and as an unquestionable matter of fact, Da 5:20.
Apud Eubseb. Praepar. Evangel. l. 9. c. 41. p.