Adam Clarke on Daniel 4:37

Now I - praise and extol - It is very probable that Nebuchadnezzar was a true convert; that he relapsed no more into idolatry, and died in the faith of the God of Israel. It is supposed that he lived seventeen years after his restoration. But the authorized Version, which is followed in the margin, states the date of this decree to be b.c. 563, the year preceding Nebuchadnezzar's death.