Ezra 1, 2
The book of Ezra, the first part was probably written by Ezra but written from the records. Actually at the time that Cyrus gave the decree to build the temple, Ezra wasn't even alive. Ezra doesn't come into the story, into a firsthand account until you get to chapter seven. The first six chapters deal with the first of the repatriation of the nation Israel after the Babylonian captivity.
Now in the first year of Cyrus the king of Persia, that the word of the LORD by the mouth of Jeremiah might be fulfilled, the LORD stirred up the spirit of Cyrus king of Persia, that he made a proclamation throughout all of his kingdom, and put it also in writing, saying, Thus saith Cyrus the king of Persia, The LORD God of heaven hath given me all the kingdoms of the earth; and he hath charged me to build him a house at Jerusalem, which is in Judah (Ezr 1:1-2).
Now he mentions here, "In order that the word of the prophecy of Jeremiah might be fulfilled." And as you turn to Jeremiah chapter…