2 Chronicles 36:22 - Clarke's commentary and critical notes on the Bible

Now in the first year of Cyrus king of Persia, that the word of the LORD spoken by the mouth of Jeremiah might be accomplished, the LORD stirred up the spirit of Cyrus king of Persia, that he made a proclamation throughout all his kingdom, and put it also in writing, saying, Now in the first year of Cyrus - This and the following verse are supposed to have been written by mistake from the book of Ezra, which begins in the same way. The book of the Chronicles, properly speaking, does close with the twenty-first verse, as then the Babylonish captivity commences, and these two verses speak of the transactions of a period seventy years after. This was in the first year of the reign of Cyrus over the empire of the East which is reckoned to be A.M. 3468. But he was king of Persia from the year 3444 or 3445. See Calmet and Usher.